The easy fix is for clients not to use those hashtags and have them topical oriented. Plebchain can stay as it's a way people can reach out for help.
New users really need to know all the hashtags and lingo here as their isn't good documentation on it. Even I'm learning new things! I can't say I have experienced the follow4folow thing with the #grownostr thing as of late, but I can see your point.
For Twitter and legacy social media, I agree with your point with established creators, but as I pointed out anybody new/starting out has the deck stacked against them because of how the algo operates in centralizing things around big accounts to keep users on their platform and ad money flowing. Not saying it's not possible to grow a big account elsewhere, but it's certainly much harder with all the noise and saturation.