Did the Prophet ever contemplate burning the homes of those who failed to attend congregational prayers as a severe warning, or as an obligation that believers must fulfill?

Congregational prayer holds great virtue and reward, but abandoning it is not a grave sin, according to the agreement of scholars. Most of them view it as a recommended Sunnah, not an obligation. Those who deem it obligatory do not stipulate the mosque, believing it can be performed anywhere. As for the Hadith about the Prophet's ﷺ intention to burn those who stayed behind from it, some scholars believe he was referring to the hypocrites.