Are we underestimating the threat of quantum computing?

Having spent the day looking at the current state of the quantum computer industry, I am left with a feeling that Bitcoin and other blockchains seem dangerously unprepared for the possible disintegration of RSA encryption. (Which means private keys will mean nothing and bitcoin can be distributed freely by anyone with access to such computing power.)

As far as I can tell, the only ledger that deals with this head on is QRL (Quantum Resistant Ledger,) otherwise it seems to be a ridiculed non-issue for most hodlers.

The answers I have gotten for asking this is usually something along the lines of:

"Quantum computing is like cold fusion; the technology of the future that never actually happens." I disagree. https://www.mckinsey.com/business-functions/mckinsey-digital/our-insights/tech-forward/the-current-state-of-quantum-computing-between-hype-and-revolution

"If RSA Encryption breaks, Bitcoin will be the last of our problems." I disagree, bitcoin seems like a great target to take advantage of without destroying the world.

"Someone is already working on this threat, dont worry about it, it will be fixed, just hodl, buy the dip etc etc" Who? What exactly is being done?

"Its just FUD, leave me alone." Ok, fine, I will ask someone who actually thinks about this instead.

Is there any documentation of what is actually being done to prepare bitcoin (and others) for the seemingly inevitable destruction of RSA encryption?

Edit: forgot to add the link I actually meant to post: https://www.technologyreview.com/2019/05/30/65724/how-a-quantum-computer-could-break-2048-bit-rsa-encryption-in-8-hours/