I have a M5 that I got through the original Kickstarter campaign. I love this printer. I use it casually, but I rarely have a failed print that I can't attribute to i.e. poorly chosen supports. Almost all of the parts on it are still original and working well, apart from the hot end that I've had to replace a few times due to accidentally breaking the screws when changing nozzles. (It was a poor design of the original hot end where the very thin, long screws did not have the shear strength in aluminum to not break when accidentally torquing the nozzle head. This was fixed with the all-metal hot end, which is not ideal for all filaments.)
Despite my issue with the hot end (which I believe could easily be fixed with an updated design), and the nearly useless "AI" feature, I feel like this printer was a great value at the time. It's very well built, looks great, and very reliable. I really enjoy every opportunity I have to use it and do not regret my purchase decision at all.
I'm saddened that they seem to be pulling out of the market, even though it makes sense compared to the competition. It really seemed like they had a promising start. If this is truly the end, then RIP with positive sentiments from me.