The two main issues with Lego sets I have are:

The huge amount of specialized parts that are pretty useless for basic building. They're basically adornments.

Prices are insane. I.e. quantity and often quality (as in: how good is the set play-/ construction time wise) is just shite.

I usually buy competitors. Here in Germany Blue e.g. bricks have opened some stores so that's where I take my nephew.

Their sets are much more like the Lego I grew up with. Using more basic parts that exist in creative ways so the specialized/adornment meaning is derived from context, not the part itself/its shape.

Which also requires more imagination from the kids playing with this.