First you do not need to trust this as OP has said it is a speculation, but if you do trust the speculation, it does not mean that you should invest in all ten of them. It is a better to pick a few and invest in, and in your choices, bitcoin has to be among surely.
The more the amount you have to invest the bigger the temptation which you must avoid to try to invest in all.
Of course, investing is not too dependent on anyone's speculation, it's everyone's initiative. Looking back at what the OP mentioned, I find it quite relaxing in the current context. We are going through a really unexciting time in the market, so speculation seems to be blowing a breath of air into this gloomy atmosphere.
By the way, a little personal speculation, I see Doge boldly proposing a price of $10 (current madness) in the near future, the scenario I imagine is that Elon Musk continues to dip got my hands on it and there was a pump combined with the market condition at the time so that price is a bit ambiguous here
I am 100% sure that XRP will not be close to 9 dollars, everything else looks at least just a bit realistic, like not a lot but a bit. For example bitcoin is near 25k right now, reaching around 175k would mean that it would go up 7 times higher, and that's realistic a bit, even if it doesn't reach that level, it's not really unbelievable to get there.
However, XRP is under 50 cents right now, reaching 9 dollars or so means that it would have to go up x18 times. I haven't checked every single one of the list, but if anything looks x18 or more at the top 10, that's wrong and will not happen. The best case is x10 and even that's questionable, the most reasonable expectation should be x5, that's good for all of them. So bitcoin at 125k, xrp at 2.5 dollars and so forth.