He made the assumption that MAME still stood for MULTIPLE ARCADE MACHINE EMULATOR. He assumed that it should only run ARCADE games. Rather than taking 2 seconds to do some research into the changes, he came off as a smartass & somehow felt a discussion was required to sort out his confusion. Personally I found it funny that he stated he wasn't "angry"...like he would have had some right to feel that way about changes to the program & his lack of understanding of those changes. I don't think anyone really cares how he feels about it
Windows 11 64 bit OS
Intel Core i7-10700
Nvidia GeForce RTX 2060 6GB
32GB DDR4 RAM