IMO, no, it is not. I just made my last purchases from there, ever. I picked up Tenerife Sur (Reina Sofia) and La Palma, both sim-wings creations. I do a lot of flying around the Canary Islands so I was happy to add these custom “enhancements” to my game. They were fairly expensive. I installed them an immediately noticed upon arriving in the vicinity of Reina Sofia that some of the landscape had been replaced with white block looking . . . Items? Hard to describe and not at all pretty to look at. Very distracting actually. I then flew over to La Palma, same deal. So instead of bits of what might be characterized as maybe fields or farmland, I have white blocks that look like they might be misplaced glaciers. I have an NVidia 3080 so it’s not a graphics issue and without the addons the scenery goes back to normal (glacier free).
I feel the that the rating systems suffers from incredible ambiguity. One person’s 4 star could be another’s 2 star and so on. I think that there should be some way to incorporate written reviews, even brief ones. While someone might be happy to replace fields and farmland for glaciers just for the experience of the custom airport look when they’re on the ground or taking off, I’m simply not happy with that but there was no way for me to know about it until I purchased them. 