Magmatic is hard, but:
1. It's about the level of Clutterfunk(don't know why you'd be beating a gauntlet before that, and it's achieveable for every one)
2. It has really fun gameplay(unless you can't do Wave)
3. It's easy to rebeat(my first time was 2098(!) attempts, the second time only took 14; for comparison, Clutterfunk took me 1807 the first time and still takes me three figures to redo)
4. It teaches you consistency(still Long, but a few seconds short of XL)
5. The deco and music are really cool, arguably Epic worthy
6. It's a gauntlet level(it's supposed to be fun, but not free; you can hate me forever, but the Chaos Gauntlet is almost as good, the levels are 7-8* difficulty though)
Yes, it deserves 8*, but file a petition for RobTop to rerate it if it's the rating that bothers you. Of course, you risk getting roasted for skill issue and going famous after a "RobTop being a savage for N minutes straight" video. Or step up your game and come back later. I beat Magmatic in October, now it's January and have quite a few Demons(11 Easy Classic, 5 Easy + 1 Medium Platformer) under my belt, planning on moving on to Mediums soon). Looking back, the Fire Gauntlet is worth getting stuck on. Hope you understand why it's here