I'm maybe like 2 hours in, so still early, but its a pretty darn cool game. I think it can definitely hold its own against some of the better Metroidvanias out there - I was worried a new Metroid wouldn't be able to stack up against the amazing indie Metroidvanias that have flourished this past decade but while this may not necessarily be the best of the best it is definitely up there among the better games in that genre. Metroid still kicks ass.
I've only ever played through Metroid and Super Metroid. This is making me really hope Nintendo adds GB and GBA to Switch Online so I can play through the whole collection on the Switch at some point. Then we just need a damn Prime Trilogy and Switch would be the ultimate Metroid system.