Exegol is literally hard soil and lightning.

Most boring planet ever. I guess the lightning could be scary, if you weren't near the main structure. Considering everything is flat, you'd end up dead pretty quick.

Exegol is a copy of Legends malachor 5. I would have preffered dromund kaas to make an appearence.

For me the birthplace homeworld of the sith is exegol in the unknown regions

I actually experienced Malachor V.