Twitter is going to purge and archive inactive accounts
 

"[Y]ou will probably see follower count drop," Twitter owner Elon Musk has warned the website's users, because the company is purging accounts that has "had no activity at all" for several years. Musk's announcement was quite vague, so we'll have to wait for Twitter to announce more specific rules, such as how long "several years" actually is.

https://www.engadget.com/twitter-is-...6.html?src=rss