Sure, I agree, but
The player characters need a reason to be on the ship, to be travelling to other worlds, to be getting into all those "fun" bits. Traveller generally supposes they do that and are prepared for the "fun" bits by being and having been space crew.
Automate things and you change that.
Not that it's a bad way to go, I never intended to imply that, just that it will be different... such as the PCs are, quite simply and appropriately for the game, Travellers.
Once you introduce the level of AI that eliminates the need for ship crews it is a different universe. One that is unlikely to get back to needing ship crews. Those jobs, and hence the training and experience for them, will be gone and not coming back.
Just as humans were replaced by automotive assembly line welder robots because they are faster, better and cheaper. Just as I read in the news today that Canon (iirc) is going fully automated in camera assembly (in one plant at least).
It's not a bad thing, it's just a change. Unless you're the worker being replaced.
In the game it could be a very interesting scenario. Generate the characters normally then have them discharged because they are replaced by AIs. Their once valued and valuable space skills are now unemployable except on the few antiquated small ships still stubbornly plying the space lanes. Ships which will in a few years be so obsolete as to be outlawed as hazards to safe navigation and ordered upgraded to AI or scrapped. Do the players go underground and keep working? Or resign themselves to early retirement? Or upgrade their ship and become redundant aboard? Maybe they will look forward to just travelling... and still finding "adventure" in that.