What is the preponderant ruling, supported by evidence, regarding the celebration of the Prophet's birthday, concerning the two opinions of "innovation" and "permissibility"?

The scholars differed regarding the exact date of the Prophet's birth (peace be upon him). The beloved ones of the Prophet (peace be upon him) from among the righteous predecessors did not assert the day of his birth, let alone celebrate it. Muslims did not celebrate this birth for several centuries until the Fatimids invented it. The first to innovate the Mawlid an-Nabawi in the city of Irbil was King Al-Muzaffar Abu Sa'eed in the seventh century. Any act of worship that the Companions of the Messenger of Allah (peace be upon him) did not practice, you should not practice. For what was not a part of the religion then, is not a part of the religion today. As for considering sciences like 'al-Jarh wa at-Ta'deel' (discrediting and accrediting narrators) as innovation, this is from a linguistic perspective, not a legal one. All legal innovations are blameworthy, whereas linguistic innovations can be praiseworthy or blameworthy. Love for the Prophet (peace be upon him) is demonstrated by following his Sunnah, teaching it, spreading it among people, and defending it, and this is what the Companions (may Allah be pleased with them) were upon. As for what is attributed to Ibn Kathir regarding the permissibility of celebrating the Mawlid an-Nabawi, it has not been found, and he is far removed from such a claim.