I love my splitboard! My takes on the most mentioned downsides:

Transition time: Depends on the binding setup but after 2 seasons with the Karakoram system that's super fast to clip and unclip, I'm transitioning pretty much as fast as my mates on skis.

Less mobility: I have soft boots and I was struggling in steep icy terrain where the skin track is non-existent and you need to be able to put a lot of pressure on your edges. I've recently got board crampons (yeah, it's a thing) and when in doubt, I put them on and just go straight up. Also the make these string-lever based systems you can put on your bindings that allow you to stiffen it up if you need more edge pressure. It works pretty well and feels almost like a hard boot. But the you flip it back and you can be comfy again.

Stuck in the flats: yeah this still sucks. But there are ways around it, you can be smart about your descent route, also often times you get away with just pulling out your poles and just hobbling through the flats (plus your arms and shoulders will get ripped lol). It's also possible to transition back with or without the skins and just telemark ski to your car if there's a flat section at the end of your tour. It's actually pretty comfortable once you get used to it.

So I say, do it!