You don't have to use systemd. However, the rest of the world left you behind. Systemd isn't controversial since everyone has adopted it. No one is making you use it but keep in mind you are a very small minority. The rest if the community moved on after systemd was release 10 years ago.
This is fine for the memes but outside of that it is silly.
Windows has about 80% market share (decreasing) in a very specific and shrinking niche (desktop PC's).
All other computing devices used by most people daily on the client and server side are dominated by some form of Linux or BSD.