Absolutely don't disagree with this sentiment. The fact of the matter is the attackers only have to be "right" once. Whereas the rest of us have to be right hundreds or thousands of times. If it's a numbers game, the odds are definitely in favor of the attackers.
Cryptocurrency aside, it definitely looks like these attacks are ramping up and we - the developers with access to critical infrastructure - are the primary targets. Today its crypto, tomorrow it's SSH keys.
It's both worrisome and tremendously annoying.