Yes, I think the problem with most newbie investors is that they try to find the next X100 and buy any kind of coin which makes this promise. While doing that, they miss out the next X10 or X30 and that is what I see in IOTA and XMR. From the 4 strong and healthy projects (although BTC may not be healthy any more) which are BTC, ETH, XMR and IOTA, only the last 2 have a small market cap of 1 billion USD.
Other top 10 coins like LTC, NEM, XRP, DASH etc. are a joke.
I only like to put my money into quality stuff, where I can hodl even through lows with no problems because I know the value will come back again.
As far as LTC and DASH are concerned I think they have a rightful place in the top 10.
Litecoin being silver to Bitcoins gold; it was one of the first altcoins and also has very low transaction fees giving it a deserved top 10.
With DASH I dont like the instamine or the fact the devs seem shady either, but it still has neat tech and there are other popular coins with instamines/premines like ETH that isnt hated by the Monero community. With both masternodes and instant transactions (are they temporarily disabled?) I do think that it does deserve a spot in the top 10.