i am sure there are people that match the description you posted here but that is not all there is!
i have not been in bitcoin from early days but i have been around long enough. i have actually studied bitcoin, checked the code and know as much as i need to know about it and more. i am in no means an expert but i have tried to educate myself about bitcoin enough to know its potential and whether it is real or not.
that's my money i am putting in it so nobody cares about it but me. and i decided that bitcoin is the one that i choose to invest in an hold because i see the real future in it after spending enough time studying it and understanding it as much as i am capable of.
i have done the same with altcoins. i see a lot of cool projects for sure, a lot of interesting ideas too. but in the end when i study them deeper and start using them i am usually disappointed specially when it is the big top coins that everyone is so hyped up about.
again it is the same thing, it is my money and nobody cares about it but me. and based on my research i find 99% of the altcoins without any kind of long term potential.
am i wrong? maybe but this is the conclusion that i have made now and i am not willing to risk my money any longer than their short term pump potentials.
am i missing anything? not really! even if i am wrong i can always join the wagon later on but only when i am proven wrong not just because someone on the internet started hyping some altcoin.
2) They see altcoins only as a way to enlarge their ownership of BTC and need to occassional spreading of fud to make sure alts do not get too popular which could negatively impact bitcoin dominance...
i disagree with this.
first because a random opinion/comment on the forum is not going to change the course of the market. if it could then bitcoin should have died a long time ago when they were spamming bitcointalk with "bitcoin is dead" topics.
second because even if an altcoin grew it would never threaten bitcoin's dominance. it is like saying if Chinese Yuan goes up in price, US dollar will lose dominance!!!