Yes, it is. It is how we do our job in technology fields: We study trends and speculate developments then decide. We don't take fiction about a monster that suddenly shows up with super-power, as being serious.

It will be long enough: When a technology is in its infancy, i.e. it is not scalable, doubling the speed needs quadratic or higher costs, QC is in such a phase, it is definitively not scalable right now.
If a breakthrough happens in the future and scalable QC technology becomes available, it won't be commercialized for a long time because of governments and military and corporates who need it for their devious plans. It would be very unlikely to be used against the day to day bitcoin transactions. It is also worth mentioning that scalable technology needs time to mature. We are talking about a few years for the least, to be very paranoid.

You need a non-Interactive zero-knowledge proof protocol which is not a piece of cake, it is complicated and both time and space consuming. I don't think it will be ever used in a performance-hungry system like bitcoin. Forget about it.

Why should you show your trolling face once a week to me?  

For my line of research, the main challenge, regarding this issue, is a time&space efficient QC resistant signature algorithm which is an open problem for the whole cryptography community. Although I don't think it would be a wise decision for me to focus on such an algorithm, I wouldn't hesitate to take part and implement it in my proposal, at any point that we might have become close enough to a consensus about a superior algorithm.