Looking at the specs, there are a lot of compromises, which probably explains some of that.

• UFS 2.2 storage.
• "only" 8GB RAM (the 16GB "extra" is just swap space).
• 450 nits max brightness and "only" 60Hz.
• Video on the rear camera maxes out at 2K@30fps. It hopefully can at least do 1080p@60, but seeing as even $500 phones are starting to get 4K@60, that's a dip.
• 33W charging for that massive battery which even they say takes 4 hours to charge fully.
• No WiFi 6.
• Android 13 instead of 14 and I wouldn't hold my breath for more than one update.

It still looks pretty interesting, though, and if that $300 price tag lasts until it's actually available, I'm tempted to get one just to see what it can do.