Let's imagine some antiviral inquisitors who are either ignorant of that fact, or else operate in a world where there are very similar genes that haven't been discovered.
If they were editing gametes/embryos, they'd probably discover the problem quite quickly, and either make an exception or abandon their work.
However if they were enacting some kind of retroviral edit on adults (which would be kinda-hypocritical) then things might look fine for a little bit... until someone realizes that there are no more babies anymore and the population is going to go extinct without a fix.
That's how we got asbestos in walls, lead in gas/paint, freon, pfas, &c. The same story over and over and over again. But sure go ahead and start slicing our dna, what could possibly go wrong?
Don't get me wrong, I'm not saying throw caution to the wind, but ludditism also isn't the answer.
What did it bring ? At what cost ?
Personally I'm of the opinion that the world was already on fire as it were, what with the mass extinctions caused when we became an invasive species out of Africa. If we were still stuck in the stone age like our predecessors we would still be an ongoing mass-extinction. There is some hope to eventually not be an ongoing mass extinction but that would require some combination of even better technology and the right priorities.
Did you have a point?