I suspect the horses are healthier and stronger than in the 1700s too. I'm not sure I understand your point?
I'd agree that the niche of extremely high quality, bespoke craftsmanship still exists, and that in some cases jobs were augmented by technology rather than entirely replaced, but the point still stands that the work these people used to do has been automated and disrupted by technology.
The fact some people upskilled or reskilled as a response is analogous to coders today. All I'd question is the extent of the disruption we'll see as a result of AI – I worry that this time things will change much more quickly and there may not be plenty of other jobs for people to upskill / reskill in to.
But if that's not true then perhaps whatever software engineering exists in the future will be far more complex than what software engineers have done for the last few decades.
Every random business has some machine that puts caps on bottles or something, and these things are ridiculously better designed, engineered, and fabricated than ever before, because the knowledge and tools available to the designer and fabricator are better than ever before.
You are surrounded by things that are insanely well made by all previous standards. Even the crappy stuff that you don't think of as well-made, because it is junk compared to everything else, still has many aspects that are almost magic.
Horses? I doubt it. They're still infamously fragile creatures today, even with penicillin and vaccinations existing; similarly for strength, not much call for shires and they're now on an "at risk" conservation list: https://en.wikipedia.org/wiki/Shire_horse -> https://www.rbst.org.uk/watchlist-breed/shire-horse/
Possibly also fewer horses in total, though I don't know any stats for that far back and may be over-estimating based on the stats I do have for c. 1900.
Of course the costs are higher too. Good horses in the above category can go for north of $100k.