I know the reason people complain about the fishing.

A significant portion of the human population just can't be happy unless they are complaining about something. They will always find something to complain about. Always. God could come down and unlock the Garden of Eden and these people would complain that the weather is too nice all the time and that there is too much food to eat.

I used to work in a family run cabinet shop where it seems that I could never do anything to my bosses satisfaction. At the end of every day I expected to be told not to come back the next day but instead they would be all friendly and chummy. About this time I noticed that if I didn't mess anything up they would get really weird because they still had to complain even when there wasn't anything to complain about. So I would do some small thing wrong in the morning and they would complain about it all day and everyone would be happy.

So you have a great game like Valheim that you can play for thousands of hours and still want to keep playing. These people will whine endlessly about the next update or why do the mobs bother me all the time or why does the fishing have to be so hard (or easy, tedious or whatever they have thought up that they don't like).

Birches gonna birch (except the 'r' should be a 't')