You can change default search engine, but you cannot add extra search engines in Safari without building your own extension (and paying apple for it)

So does Firefox desktop...? Extensions aren't needed, just right click on a search field and add it. You can customise placeholders and keywords too

The resulting search shows up in the search UI, whether you have firefox configured for a seperate search bar or have their default of the address bar also being the search bar. This is the same as the extension method.

If your complaint is that they also show up in bookmarks, then ehh, whatever. Most people either don't use bookmarks or have a giant dumping pile. If you're one of the 1% that organizes them, just put all your search bookmarks in their own folder.

They aren't. Why do you claim things that aren't true?

https://news.ycombinator.com/item?id=39239822

Safari automatically detects search fields on websites and adds to the smart address bar. E.g. if I type "discmaster myst" Safari will suggest to search discmaster.textfiles.com for "myst". And that's something it automatically picked up. No plugins or configuration needed, users don't need to learn how HTTP queries work.

[1]: https://help.kagi.com/kagi/getting-started/setting-default.h...

Search url: https://api.hackertarget.com/geoip/?q=%s

  URL: https://api.hackertarget.com/geoip/?q=%s
  Keyword: @geoip

And now I have many nonsense bookmarks because I want to use them as search

On Firefox Android, you can also just go to into settings, search, manage search engines, + add search engine. So, basically, exactly where you would expect it.

I think on desktop it's just as easy? Can't you just right click on most submit forms?

I would expect same in Desktop also. But in Desktop you have to add bookmarks to manage extra search settings.

If Mozilla is pissing other browsers all the time then why they do not fix it. Googles money does not allow easier search settings?

Keyword bookmarks have been a thing in Firefox since 1.0.x days and well before Chrome was officially released. It's an opinionated implementation that lives today as ~2 decades of deeply engrained tech debt. How do you even come off expecting Mozilla to operate at the same level as Google and its $1.7+ trillion market cap?? The level of entitlement in your remarks is simply beyond absurd.