Musk was hated by a lot of people long before his takeover of Twitter, and by many before he even started going all political. The EnoughMuskSpam subreddit has existed for 8 years.
The man shills solutions that don’t work (Hyperloop) to oppose public transit projects so the US would stay car dependent, lets his company operate with near zero quality control (literally, interior panels often just… fall off on Teslas a couple of days or weeks after delivery?) and so on. This was all long before 2020, which is the year he turned into a right-wing nutter because… checks notes … the lockdowns were affecting Tesla’s revenue and he wanted to be able to force his employees to continue working in unsafe conditions.