Please rate my brother in laws investment strategy

So for context, I’m somewhat financially savvy but certainly could know more.

I have invested a little into bitcoin but that’s it.

What I’m really interested to hear is what you think of my brother in laws investment strategy.

But of context: he’s 26 and lives in the UK, he cleans windows for a living but is capable of much more and capable of learning something more career based. He’s extremely ambitious and wants to make a lot of money, however he’s clearly not trying to do this through his work…

So, he invests in crypto, and feels that he’s going to be a multi millionaire in a couple of years.

I asked him about his strategy and he said that when he gets paid, he invests everything he possibly can into the coins that have dropped the most from their all time high. For example, a few days ago when he got paid, he bought occam.fi. He has all of his money spread out across these multiple coins that are worth basically nothing compared to their all time high and he’s fully convinced that they will 100x over the next couple of years when there is ‘the bull run’. He says that everyone who buys a house ‘has taken a massive L’ and is a slave to the system. He doesn’t have any hobbies other than the gym, and my biggest worry is the impact he’s having on his gf (my sister in law). He would never buy bitcoin because he thinks it can never get him the returns he’s looking for ‘doubling my money just isn’t what I’m looking for’.

So, fellow crypto enthusiasts, what do you think of this strategy? Is there any chance of this paying off? Or is he destined for windows the the rest of his life?