It is never too late to buy Bitcoin. But it also makes sense for someone who didn't accumulated yet to say that it's too late buy when they feel that the current price is quite high. We can't blame them as well for telling that but you do you. If you believe on the long term holding of Bitcoin, you'd pretty much buy at any price levels doing the same DCA strategy of MicroStrategy, they don't mind about the prices, they just put where their money is. And, you're a lucky guy, how I wish I still got some dust balances on my old wallets.
What we have seen so far is that Bitcoin has become a valuable thing whose price is continuously increasing since it's launch. The price is standing over 90k and there is affirm chance that it will go up from here. Though price may go down before moving up but that dip will be temporary.
It had been down after hitting more than $100k in ATHs.
In the long run price of Bitcoin will defiantly go up. Anyone who understand that concept won't hesitate in accumulating Bitcoin at any price, it may be 50k, 100k or even high.
It's not recommended to buy at the top but if that's the point where we're seeing the doors of higher and new ATHs then that's how it should be. Most holders won't look at the prices now because those that have accumulated at the bottom can fairly sell at any price now.