I like my M7...
I bought the M8 predecessor (yes, the M7) shortly before the M8 was announced - Samsung had multiple discounts (and a free pair of bluetooth headphones) so I got it new from them directly for £187, which is a great price even for a "dumb" 32" 4K monitor. The M8's pricing is a joke by comparison - £699 and all they've done is throw in a Webcam and not allow you to buy it in black (which my M7 is).
Ignoring the smart apps/Office 365 stuff (which I never use because a PC is attached, duh!), the M7/M8 have wi-fi, bluetooth, 65W PD charging (one £4 USB cable got it nicely charging my Steam Deck while the monitor is on) and a remote control (every monitor should have one for the monitor UI and turning it off/on). One cute thing the monitor did is check for a firmware update for itself, prompt for it and download/install it once you confirmed with the remote - does your monitor do that?
At £200-£250, the M8 would be an absolute no-brainer, but at £700, there'll be very few takers. I do wish my M7 had better speakers though - looks like the M8 did bugger all to improve one of the weakest points of the M7.