Weak because isn't future-proof.I see you’ve been using Apple products since 2010. Here’s a bit of a longer perspective:
1: “Weak” how, exactly? The M1 is faster than the models it is replacing (the 21.5” iMac)
2: Before Apple switched to their silver / black Bahaus aesthetic, their products were really whimsical. Look up the iMac G3 if you’re unaware. Even their “Pro” line up, the PowerMac G3, was bright blue and translucent. Ugly is a matter of opinion.
3: Given that they're more powerful than nearly any other Mac in the lineup (for example, blowing away my 2018 15” machine which was more than 2X the cost), what makes you say they won’t last a long time, exactly?
4: You’ve been using Apple products since 2010, yes? Ever heard of the MacBook Air? Plenty of 2010 / 2011 models still going strong, and they were just obsoleted with the last security update to High Sierra last year. That’s literally 10 years of support.
Repairs become much less of an issue with the M1. There isn’t a dGPU to cook itself and die out after a few years, nor an internal power supply which becomes finicky with age (both issues I currently have with my 2011 27” iMac).
Steve’s ethos was simple: Make elegant products and focus on the experience. Subjective design criteria aside, where is your rationalization coming from?
Do you really think that this type of machine can last for a decade or for a five-year period?
A soldered 256 GB SSD with estimated 150 TBW is your idea of longevity?
A soldered maximum memory of 16 GB is your idea of performance?
The machine is weak and ugly, nothing else to say.