It's not bad. What actively bothers me is the incessant flashing of the whole screen for two minutes every two minutes or so. Besides that,

Fulgora discovery spoiler

there not being any enemy whatsoever

makes it less... special? deep? highlight-worthy? I'm not sure what to call it but that makes it feel pretty barebones so I wouldn't say it's among the best planets, even if it is a good planet

Fulgora resource management spoiler

It also feels wasteful to trash so much stuff just to get a trickle of Holmium ore, even if it's a fun challenge, it feels kinda wrong. I've just accepted that now, though, as there is no way around it and the near-spawn deposits are rich enough for it not to be a problem in my current save's production scale

Which is not to misrepresent how fun the unique challenges to Fulgura are to solve: very much in line with how Factorio should be, yet also unique. I did enjoy it (last night I spent some time working on the setup there and enjoyed myself) even if it's not imo among the absolute best planets :)

Curious how you see it. The Gleba experience was exquisitely frustrating for a while but I've come to enjoy it, even if I can see why someone wouldn't. But Vulcanus, for example, how'd you rank that with Fulgora?