Anyone else getting concerned with the skill floor getting lower?

[Jojoya]

For raiding maybe but this is about the more "casual" content like dungeons

Even dungeons are going to take many people time to learn.

Not everyone is coming into this game as someone with experience in combat-based games let alone as a MMO veteran with a good idea of what to expect. Those lacking any relevant former experience are going to need more time.

There tends to be peer pressure whether real or only perceived to reach level cap as quickly as possible because they'll get told that endgame is where the real game begins (true of some other MMORPGs but not true here). As a result inexperienced players may focus on rushing to level cap instead of learning how to play their chosen job.

As you said, there are also players with disabilities that make it more difficult for them to perform to expectations.

We can offer tips and help but we can't force them on someone who isn't interested in receiving them. We can point out that Duty Support exists so they have a place where they can practice dungeons and learn mechanics before joining random player parties. We can encourage them to read the Playguide that is linked on every new character's hotbar. But we can't force them to do these things. Some players also learn better from other players who can answer questions as they go than from guides that share information in only a single way.

What else can we do? Have patience. If you don't mind taking on the role of teacher, ask them if it's okay for you to share a few tips that should help them have a better game experience.

If patience is not something you can offer, then it may be best to avoid Duty Finder matchmaking and stick to playing with those you already know and trust. Even if most groups go well, there will always be the exceptions popping up on occasion.