If you think Molana Ishaq has better point of view then you are free to follow his opinion

Itmam Hujjat law is not drived from Surah Tauba actually. You can find more details here Discussion 37972

For Ghamidi sb point of view Please See following from 15:00 onwards
https://youtu.be/R9Y87uoSfc8?t=230

From what I’ve understood from Maulana Ishaq Sahab’s video, following points need some clarification:

1) The use of ‘Alif-Laam‘ and its extent of application is to be decided the way we do in application of other words i.e. the word itself, the sentence structure and the context. Therefore, we we take all these factors into account, it can be said without any doubt that these verses are talking specifically about the poltheists of Arab.

2) Secondly, regarding Saurah Tauba only addressing polytheists who broke their oaths with the Prophet (sws) can be negated by just reading a simple translation of such verses. The respite was given to the Idolators who stood with their agreements till the end of their term only and after that, the same law was to be apllied to them as well.

بَرَاءةٌ مِّنَ اللّهِ وَرَسُولِهِ إِلَى الَّذِيْنَ عَاهَدْتُّمْ مِّنَ الْمُشْرِكِيْنَ. فَسِيحُوْا فِي الْأَرْضِ أَرْبَعَةَ أَشْهُرٍ وَاعْلَمُوْا أَنَّكُمْ غَيْرُ مُعْجِزِي اللّهِ وَأَنَّ اللّهَ مُخْزِی الْكَافِرِيْنَ. وَأَذَانٌ مِّنَ اللّهِ وَرَسُوْلِهِ إِلَی النَّاسِ يَوْمَ الْحَجِّ الْأَكْبَرِ أَنَّ اللّهَ بَرِيءٌ مِّنَ الْمُشْرِكِيْنَ وَرَسُولُهُ فَإِنْ تُبْتُمْ فَهُوَ خَيْرٌ لَّكُمْ وَإِنْ تَوَلَّيْتُمْ فَاعْلَمُوْا أَنَّكُمْ غَيْرُ مُعْجِزِي اللّهِ وَبَشِّرِ الَّذِيْنَ كَفَرُوْا بِعَذَابٍ أَلِيْمٍ. إِلَّا الَّذِيْنَ عَاهَدْتُّمْ مِّنَ الْمُشْرِكِيْنَ ثُمَّ لَمْ يَنْقُصُوْكُمْ شَيْئًا وَّلَمْ يُظَاهِرُوْا عَلَيْكُمْ أَحَدًا فَأَتِمُّوْا إِلَيْهِمْ عَهْدَهُمْ إِلَى مُدَّتِهِمْ إِنَّ اللّهَ يُحِبُّ الْمُتَّقِيْنَ. فَإِذَا انْسَلَخَ الْأَشْهُرُ الْحُرُمُ فَاقْتُلُوْا الْمُشْرِكِيْنَ حَيْثُ وَجَدْتُّمُوْهُمْ وَخُذُوْهُمْ وَاحْصُرُوْهُمْ وَاقْعُدُوْا لَهُمْ كُلَّ مَرْصَدٍ فَإِن تَابُوْا وَأَقَامُوْا الصَّلاَةَ وَآتَوُا الزَّكَاةَ فَخَلُّوْا سَبِيلَهُمْ إِنَّ اللّهَ غَفُوْرٌ رَّحِيْمٌ. وَإِنْ أَحَدٌ مِّنَ الْمُشْرِكِيْنَ اسْتَجَارَكَ فَأَجِرْهُ حَتَّى يَسْمَعَ كَلاَمَ اللّهِ ثُمَّ أَبْلِغْهُ مَأْمَنَهُ ذَلِكَ بِأَنَّهُمْ قَوْمٌ لَّا يَعْلَمُوْنَ.

A declaration of acquittal is made from God and His Messenger for the Idolaters with whom you have made agreements. So, [O Idolaters of Arabia!] walk about in the land for four more months and be informed that you cannot defeat God and that God will humiliate those who deny [his prophet. Then when the time of hajj arrives,] in order to communicate to all the people [of this land,] a general declaration should be made from God and His Messenger on the day of the big hajj that God is free from [all] obligations to these Idolaters and so is His Messenger. So, If you people repent, it is better for you, but if you turn away, then bear in mind that you cannot escape from God. [O Prophet!] Give tidings of a painful torment to these disbelievers. Those Idolaters however are an exception from this declaration of acquittal with whom you have a treaty and who did not leave any stone unturned [in honouring it] and did not support anyone against you. So honour their treaty to the end of their term because God loves those who abide by the limits [in fulfilling promises. After this declaration [on the day of the great hajj] when the sacred months have passed, kill these Idolaters wherever you find them, and [for this purpose] capture them and besiege them, and lie in wait for them in each and every ambush. Then if they repent and are diligent in the prayer, and pay zakah, then leave them alone. Indeed, God is Ever-Forgiving, Most-Merciful. And if at this instance of onslaught any of these Idolaters seeks asylum from you [because he wants to hear out your message] grant him asylum until he is able to hear the word of God. Then take him to his place of safety. This is because these are a people who do not know [the words of God]. (Quran 9: 1-6)

3) Regarding Persecution, videos in the following link will help resolve your confusion:

Discussion 37972 • Reply 37979

4) The Law of Itmam-e-Hujjah is not based on Surah Tauba alone, it is based on several other verses in Quran, the details of which can be read here:

Discussion 37972

Surah Tauba is just a final episode of that Law and not the whole law itself.