These two complaints about the new Mac Mini IMO are way overblown. First, regarding the power button location, I don’t expect most people will have much trouble with the power button being on the bottom as a lot of people using this Mac Mini will mostly just put it to sleep when not using in and will wake it via the keyboard/mouse. Only when you need to do a hard reset it this going to be an issue at all and I expect most average people can easily get their finger under the button to press it IMO and for you fat fingered types you can lift up the Mac Mini slightly if need be as it very light.
As for the Magic Mouse’s “USB-C charging port on bottom” issues, thats another overblown issue. Changing the port location requires a redesign of the mouse and makes the back of the mouse look ugly IMO (YMMV). I would be willing to accept this change if charging the mouse via the bottom was really a major hassle and inconvenience but it’s not. The mouse runs a full week on a charge and charges back to full in 5-10 minutes. So all you really need to do is when the. Mouse’s charge is too low is to take a break for 5-10 min, for a snack, coffee, bathroom stop, to check your phone, etc. All you’d really gain by having the ability to use the mouse while charging is maybe 10 min per week of extra use which is hardly worth redesigning the mouse for IMO. Had the charging of the Magic Mouse via USB-C been a slow process then I agree with you there about this being a problem.