There is supposedly woodworker opposition.[2] "Many woodworkers argue that the implementation of SawStop technology has disrupted traditional woodworking practices. Some feel that it has altered the craft in a negative way by making it less reliant on skill and attentiveness, instead placing an emphasis on technology to prevent accidents. This shift in focus is seen as a departure from the fundamental principles and values of woodworking." However, no actual woodworkers are quoted, and the author has a tool store, so this is probably astroturf PR. That web site is addressed to people with a semi-religious attitude towards woodworking, not to working carpenters or cabinetmakers.
(Having used circular wood saws, I am all in favor of blade-stop devices.)
[1] https://www.govtrack.us/congress/bills/118/hr8181/text
[2] https://www.woodworkcenter.com/why-do-woodworkers-hate-the-i...