That is a massive oversimplification, and frankly an insult to people who actually spend time doing proper research instead of turning every large transaction into a conspiracy theory.
The reality is much less dramatic.
Exchanges and other platforms acquire assets themselves when demand increases because they need inventory and liquidity to service customers.
At the same time, a significant share of exchange inflows consists of customer deposits, often from people moving assets onto an exchange precisely because they intend to sell.
Market manipulation is real and absolutely worth investigating, but screaming “manipulation” every time coins move onto an exchange is not research ffs.
Without evidence connecting those flows to coordinated trading, price suppression or another manipulative strategy, this is just speculation.
Don’t let engagement-farming posts distort your understanding of how markets actually work.