Dear Jawaid Saheb,
I added in your post that the excerpt belongs to QXP.
As a conclusion resting on due contemplation, I believe in that part of history and Hadith that goes in line with the Quran. Abi Lahab and Umm Jamil have been mentioned as such even outside of Tabari, in books written before him.
I won't throw the baby with the bath water. All or none law should not apply to Hadith and history.
Even then, if we take out history from Surah 111, it will have no bearing on the meaning of the Surah.
Abi Lahab, still, will allude to any man who has a fiery temperament and is prominent in his clan for glowing like fire due to his wealth, position, tyranny and oppression and his wife shares his attributes.
Certainly, you may have your own understanding and share it with us.
To give you another example, Surah Al-Fil has a history behind it. The story of Abraha's army of elephants launching an attack on Ka'bah has been recorded in the history of Ethiopia and Yemen, a part of the then Byzantine Empire. 'Aam-il-Fil, the Year of the Elephant, serves as a historical landmark even today, the year in which the exalted Prophet was born.
How about the kingdoms of Solomon and Sheba? Is there no historical evidence of them outside the Quran?