I remember hearing and reading "pegged" in an IT context back in the 1990s, at least 10-15 years before the sex term seemed to gain widespread usage. It was definitely used in entirely work-safe contexts where one would never dream of making anal sex references.
Of course, now that you mention it, I think your belief is likely common enough to make me reconsider its use! I think a lot of folks hearing "pegging" in 2020 probably think of the sex practice before they think of speedometers -- a lot of people don't have cars, and many that do never notice the little pegs.
However, I do think "pegging" (a somewhat obscure IT jargon term, with obscure etymology) is in a different situation than "grooming," an incredibly common everyday word. Retiring a bit of jargon is entirely different than retiring a an everyday word.
