There have been a few changes that have removed functionality, or mean that a player can no longer go back & do something they used to do. Fleet Carriers functionality isn't one of them, although the way fuel availability (a core gameplay element for travelling with a carrier) could be considered similarly if it is not just yet another bug.
What Carriers do, is open up lots of potential for new huge challenges and projects without taking anything away from those that wish to do something the hard way or the way they used to for the hell of it.
This is such a bizarre line of argument. I am not sure how it is possible (or even why it would be needed) to ignore major additions to the game just for a need to keep playing in a certain way. Rather it would have been great if the new additions to the game were added in a manner that made them not water down what made Elite Dangerous great to near insignificance.
DSSA seemed like a preposterous player initiative when it was launched, well before we knew what the carriers would end up looking like. The entitled whine from carrier explorers was deafening when the carriers then came about, and having FD cave in and make them into weirdly godlike ships rather than, well, the mobile stations they were presented as, just threw fuel on the flames of entitlement of a certain subsection of the exploration community.
If you want to carry on with some sort of John Henry-like resignation to the changes, fine. However, wouldn't it have been better if the carriers were made to work right from the outset? Carriers continue to not work very well with the rest of the game, and it looks like FD is happy to just let the game hobble along until the next big DLC. If that is a near-complete rewrite, hopefully carriers will then be made to work right.