It is a small buy, not a bold move.
My main concern with MicroStrategy's regularly massive Bitcoin accumulation is what happens when they eventually liquidate their holdings into fiat. No matter how bullish Saylor may be, his investors will not always share the same stance. At some point, they will want to secure profits, which could lead to significant selling pressure on Bitcoin. Such a move could heavily impact the price and resemble monopolistic behavior or even market manipulation.
That's not how Strategy works. It is not a company that is built on buying and selling things at profit and moving on. Its whole strategy is about holding the asset. A few investors are not able to pressure the whole company to destroy its whole strategy and reason for existing. It is never going to happen.