Any new pilot has an immense amount to learn. Any experienced pilot still has lots to learn, so they're all licenses to learn.
New pilots who use their modest skills to choose the conditions best suited to their skills, are probably fine - in those conditions. Then, as long as the new pilot remembers that for many passengers, simply being off the ground at all is very impressive, so additional efforts to impress (steep turns and zero G) are not necessary, and probably actually counter productive to a fun time, things should go well.
A young fellow I knew decades ago, had the free use of his dad's fleet of a dozen or so various aircraft. So did I, so I really appreciated the privilege. I took care to be a very respectful pilot in those aircraft - he, not so much. When he was 16 (and very skilled, though yet to be fully licensed) he used to "borrow" the Aerobat, and take his girlfriend flying. I caught him once looping and rolling her. The poor girl was scared speechless when they got down (I was waiting). I told him that if I caught him again, I'd have his parents ground him. I caught him again (I was surprised that he got her to go again), and had him grounded. He drove her on dates for a while after that. Oh, by the way, that young fellow is now a national aerobatic champion - I guess he showed me!
Pilots, particularly new ones, think that what they do is impressive. The rest of society, probably would like to think about flying being more safe and enjoyable, than impressive. New pilots will do us all a favour by giving their passengers a ride they really enjoy, and feel is safe. That makes for good impressions, and good will. Aviation needs all it can get of that!