Its not complicated at all. For one its a paid service so if you can afford it do it. If you wanna do it free you have to host it yourself

• Get a Calendar app that supports CalDAV, Task app that supports WebDAV.
• you make calendars and task lists in etesync dashboard
• copy their links and paste them in the app settings of your calendar and task apps. It also supports cardDAV for contacts

Get etesync

You talk about having reading comprehension like it's the ultimate skill in understanding yet you're talking about re-education camps as if they're an existing thing for that matter. You should get some media literacy skills before you go around acting smug about knowing how the world works