I'm not sure what lawsuit you're talking about. Please do link the article where it says that, because I definitely haven't heard anything of that sort.

If you refer to the charts you'll see that even though the rest of the crypto market went up drastically, XMR actually didn't move much during this short period of bullishness that we have experienced thus far from around 3 weeks ago, unlike other alts like EOS.

To me, this is a good opportunity to buy and shows that XMR is definitely undervalued and under appreciated. XMR is one of my favorite altcoins to hold for the long term, because IMHO it's just way more practical and useful compared to other existing altcoins. Entering at a point right now where XMR isn't hyped up is definitely a good long term investment.