They are pretty weak points. By his logic, when you join a company and work you are speculating that you will get paid a salary. At that point everything is speculation and nothing is certain. By writing this comment I am speculating that a HTTP call will be made that results in a database entry. Since humans are not perfect and never have complete information about a system they engage in speculation in every single moment of their life. The comment is effectively value neutral or maybe even net negative and merely criticizes terminology and semantics, not the actual topic itself.
Namely Bitcoin generates no returns but everyone expects it to. Since everything is speculation we are still allowed to rate the speculation by how risky it is. Surviving long enough to finish writing this comment has a 99.9999% chance or more. So this type of speculation isn't risky at all. Meanwhile betting that Bitcoin will go up or down is inherently risky since there is no driving force behind Bitcoin other than human behavior itself.