To be fair, only the HiBy R8 (and New 6) and maybe some of FiiO's newer DAPs have anywhere near the performance (and features) of modern smartphones, and even then, very entry level modern smartphones.
DAPs are very much a niche product in a niche hobby, and the best DAPs today, like the R8, offer true high end desktop grade sound and power, especially with IEMs, that even the best and most expensive smartphones can't match.
The fact that DAPs like the R8 give you that level of sound quality while still giving you the speed, applications and features of a modern Android phone is a small miracle in itself, because the most expensive DAPs from Astell & Kern and Lotoo give you exactly none of those features while costing significantly more, and not necessarily offering 'better' sound quality either.
It used to be the case that Android-powered DAPs were written off as slow, cumbersome, with poor battery life and compromised sound quality. That's no longer the case, and hasn't been for a while, and I suggest the summit fi players (and by that I mean summit fi priced players) will soon be offering the same features if they hope to stay competitive.