Everything those who don't respect others get away with is accepted. I said his statement is reasonable. It is not that it's accepted, but that they have the capability to do it, which is alarming enough, but in every case, it may be difficult to prove or disprove. It is a reasonable concern.
In software, I see bloatware as opportunities for malware. If something takes 14 hours to compile because of unneeded dependencies, as opposed to it takes 5 minutes, do you think they debugged that software, when they couldn't figure out they have 14 hours of compiling bloat, that wasn't needed? Remove one dependency, and that made a difference between 5 minutes and 14 hours, because that wanted to pull in an operating system and compiler on top of another existing operating system and compiler. Sure, the dependencies that took 5 minutes to compile can also have bugs and malware, that could be hidden for years or wouldn't ever get found, but at least it doesn't offer every opportunity available.
Hardware or ROM doesn't have this advantage of being able to sift through code or hardware circuitry (at least not now). The best that can be done is using an AM radio to detect hidden cameras, or transponders.