Ultimately, the deciding factor was the API locking out 3rd party apps. I found the Reddit App to be unusable and poorly designed, but the final straw was the unblockable ads. By this I mean, unlike other social media, there is no way to opt out of a particular ad and be served another in its place. For some users this was not a big deal because all ads are equally annoying, but for other users it was actively harmful. Recovering alcoholics were served unskippable beer ads. Gambling addicts were served ads for sports betting websites and casinos. Being a religious minority, I was frequently in groups targeted with aggressive proselytizing. It's dehumanizing.
Without the ability to use the apps that were better designed more efficient and didn't serve offensive ads, the site was useless to me. I ended up deleting all of my posts and comments as a security measure. Years of posts made it likely that my account could make me personally identifiable. Initially I planned to keep some of my posts intact that were offering troubleshooting or expert content but without the use of api tools, the task of doing so was impossible.
The general toxicity of the site, indifference to bigotry, and the CEO/Corporate behavior were all contributions. It made it exhausting and unpleasant. so I was not too sad to leave.