It is all about consumerism, which is buying new. And nothing else. Consumerism driven wants new. Some people from film era like me hates it. Where are millions of camera which are made to lasts for very long time. But for consumerist like OP It is no-no. It must be new.
Where are new film cameras made. Expensive Leica RF cameras, not expensive Lomography cameras. LF cameras are still made. Where are Cosina made SLRs which are just few years old. BH had them for sale nobody wanted it. Where is new Nikon F6 and new single use camera under different brands, including Kodak collecting dust of store shells. But no, OP wants his own new and wants to be a film saving hero.
Where are millions of film cameras in fully working order and they are made from metal and glass. They will works for decades. But no, OP wants new. Consumerism it is.
Why buy old and pay money for single repair person? It is not cool. It has to be new and under known label. Shameless consumersm. Shame.
Basically I share yor view.
However you said:
"But no, OP wants new. Consumerism it is."
But the OP said:
"Soon there will be a shortage of working film cameras, and with a lack
of mainstream camera production we will be limited to new “toy” cameras, small start-ups and a few surviving
SLR, and system cameras."
Whether we share this view or not, he started fom using old cameras. From then on asking for new cameras is not a hint at consumerism.