It is your decision to buy this coin but always invest what you can afford to lose. I think It is not the right time to take entry in any high risk and unpopular digital asset which just got listed and has no sufficient trading data to analyze its performance. We can buy Bitcoin & Ethereum on dips and keep accumulating during the bear run because these all well know coins and always perform well in bull run.
I don't know but it looks like he is only shilling it and he is the one that encourages us to invest on this coin. Masari itself is not popular but now that we know that it is somehow related to monero because it is a fork of it, I think there are now people who will check this out. Monero is a privacy coin so I think it also carry this feature.
Nowadays our privacy is at threat because there are now regulations that is being implemented but a privacy coin can be a good help for us to regain it once again. By the way, the post that you quote are not recent. It was from 2018 so this coin is already listed long time ago and their data's are now sufficient at this point.