You argument makes no sense.
People have been talking about M2 Pro pricing for a 16 GB / 512 GB Mac mini for around $1399 to $1499. Whether or not that gets released I dunno, but from a pricing standpoint, that is very reasonable.
Making up numbers like $999, even in jest, is just a straw man.
Let me summarise my points again:
1. Apple may be looking at making the intel era mini enclosure smaller and cheaper to make [eg AppleTV 4k 3rd gen is cast reduced despite now including a newer CPU]. The rest of the next Mac mini cost be on a cost reduction to keep the price low. There is evidence of sorts of smaller designs out there and one upshot includes better wifi and bluetooth reception never mind the likely benefits of making the next mini lighter and less bulky for shipping reasons.
2. An M2 Pro Mac mini cannibalises the Mac Studio horribly - perhaps this year's Apple don't care but I suspect with world materials shortages that they'd rather be making more money from a higher average selling price SKU than mass produced lower price SKUs because there will be many reasons for unit sales to be lower - not least a recession in most major markets but also ongoing supply chain issues. Basically, I think Apple would rather sell you an M2 Pro inside a 14" or 16" MacBook Pro than a Mac mini.
3. The 'jokey' remark I think is aimed at the people who are only arguing based on their own needs and budget - making your remark about making up numbers (which I am obviously aping) hit home harder for certain folks in this thread - rather what Apple are likely to do.
Why else would Apple have left a giant hole in the desktop Mac lineup for years? Yes, if you add $200 to a 16/512 M1 mini you probably arrive at the likely price for an M2 Mac mini in the current case. That's $1399 by my calculation. Such a configuration will be highly popular with me for sure.
Let's think logically about where that leaves an M2 model though. The same $200 uplift would get you 24Gb RAM in an imaginary lower spec 24Gb/512Gb M2 Mini. Which one is the no brainer now?
24/512/M2 (6+2 CPU Cores, 10 GPU cores) - 2x USB 4 Ports (offering Thunderbolt 3)
16/512/M2 Pro (double binned 8+2 CPU cores, 16 GPU cores?) - at least 3 Thunderbolt 4 ports.
But then let's throw Geekbench at it - M2 single core figures will be virtually the same, the M2 Pro will have slightly better multi core performance (20% if you compare M1 and M1 Pro, 30% if you use the top binned M1 Pro) and substantially better GPU performance - more obviously with the M1 Max - but media encoding will be the same.
And where the M1 mini always had the 'full fat' 8 core GPU there's a binned 8 core one that has a $100 BTO price in the MacBook Air M2. That plus the 24Gb RAM ceiling tells me there's plenty of room in the lineup for beefing up an M2 mini (at a cost). I wouldn't put it past Apple to tie in 10 core variant GPUs with the 24Gb RAM upgrade, and don't forget the 10 Gig Ethernet as well for BTO.
Obviously the port fiends will be happy (like they've never heard of a USB hub), but can you see now that M2 makes more sense as the sole chip in the Mini? It makes substantial upgrades of an M2 Mini meaningless because you may as well have the M2 Pro. And you're putting a hotter chip inside a case which is reputed to have poorer performing wifi/bluetooth.
In Summary:
At this point, we then start to think about Mac Nano containing just an M2 but that's creating another desktop which already sell a fraction of the numbers as laptops.
For me, the most modern thing Apple can do now is to offer an entry M2 Pro full fat CPU in a new entry SKU Mac Studio and find a way to cost reduce the Mac mini with just an M2. They could even keep the M1 going if they want to start the M2 with 512Gb storage - I don't blame them after the performance debacle.