iOS users' opinions on DAPs?

I've really enjoyed using a DAP so far (currently on my second one: iBasso DX180), not having to use dongle DACs is great and being separate from my phone creates a much more immersive listening experience.

One thing I'm not enjoying tho, is how janky some the hardware/software implementation & integration feels. Outdated OS, no security patching, laggy UI, weird button layouts (Hiby) and having to install custom launchers, keyboards, etc just to make it usable...
Being an iPhone user this has been quite shock to the system (before you try and crucify me I'm an Identity, Security and MDM engineer so I'm no luddite). It's almost got me looking at dongle DACs again..

Am I correct in assuming.. spending more on a DAP only gets you better I/O and sound quality but not a smoother, more polished experience?