The tricky part is the initial wifi setup, at least with the app, might be different if you use the Python mentioned above. It just doesn't like some routers, it's 2.4ghz only, and from what I've read some routers do the 2.4ghz/5ghz thing differently, and my Asus is one of them. I don't have problems with other devices, but I had to use a phone set up as a wifi hotspot with my router ssid & password to set it up, otherwise it wouldn't complete the wifi setup, but YMMV.
Beyond that it's worked well, it's just kinda time consuming to learn every individual RF/IR signal you need from each remote. If you're familiar with home assistant the integration isn't hard to set up, just make sure if you look up videos about it to look at the most recent, the process has gotten a lot easier over the last few years.
For the cost I'd say its definitely worth giving a shot, RF plugs work great for holiday lights. I'm not an expert by any means, but I was able to make it work without too much hassle (other then figuring out the trick for the wifi setup) and its pretty neat.
Absolutely agree, I'm running 2 of them. There's a blueprint that makes it really easy.