speculation and vitality is indeed a problem for bitcoin, but it all depends on the person who invests, if they invest in the short term, maybe it will be a problem for them, but not for those who invest in the long term, because they will not worry about all of that, in my opinion that's about it.
Nope, it's speculation so it's not something that you base your decisions with, remember that it's the reality that you should look out for and at the same time make a pragmatic decision when your doing something. Long-term people aren't immune to this problem, they can make some decisions too that might cause them to pull out their investments too early.