Yea, cropping is simple to work around in several ways, although I still find the current implementation much more annoying to use vs the simple crop to selection in paint.net or PS.
The rectangular marquee selection tool in both paint.net and PS allows you to simply set an aspect ration to constrain the selection tool, this makes it incredibly easy to select an area to fit say a 21:9 monitor for example. The workarounds I have seen suggested to do this are crazy, I feel like its a pretty basic and critical feature to be missing from the selection tool.
Combine the two together and a fairly common simple workflow I do (open an image, select an area to fit the aspect ratio of the monitor, then crop to that selection) are exceedingly complicated vs any other image editors I have used. Paint.net takes seconds and a few clicks to complete this, I had to read walkthroughs to get it done in Affinity (I am far from an expert at photo editing admittedly).