You are not entirely wrong but I would start worrying even more when these centrlized entities start having over 30% of the max supply of Bitcoin, like OP just said, it's 5% for now, out of 100% and we are worried? It's clearly not the time to be worried.

Still I hate that this is happening because the more they have Bitcoin, the more they can control the market or have power over the market, unfortunately there is nothing anyone can do about this but it's better that many retails are also long term holders too and Bitcoin is well saturated right from time.