It takes a lot of time to develop a quality add-on.
Some companies release products when they are half done and some can afford to wait until they are 95%+ done.
The initial feedback often reflects where the product is on that spectrum. Unfortunately, the reputation a company forms during those initial few days will follow them for a long time even if they fix the issues and deliver a great product a bit farther down the line.
This is why we’ve seen a lot of sh**ty add-ons in the first year and then it got better the 2nd year and it will be better the 3rd year.
P.S. The lack of a well documented SDK also plays a role. But companies who persevere and figure stuff out sill find ways to do it. Fenix is a great example of that.