The point was that most vaunted as 'strong female characters' are simply superficial stereotypes, just like most strong male characters tend to be or become. Think of all the cast of the Expendibles. Rambo started off as an interesting character, a traumatized Vietnam veteran, but became a muscle bound killing machine for all the sequels, little better than 1986s Cobra. Similarly John MacClane one (maybe two) interesting movies and then he's a caricature of himself. Van Damme, Lundgren, Seagal, Lee and so on. You can easily argue similar happened with Ripley after Aliens (maybe Hamilton was smart to avoid sub par Terminator sequals). Except for Conan (and interesting character in Howard) Arnold arguably started out as one (Terminator, Commando, Predator etc).

You can bolt on almost any attribute of a male action hero on any character, particular masculine strength and martial prowess, but merely changing their sex is cheap, lazy and oversimplistic. People aren't generic like video game characters and their easily swappable attributes. Atomic Blonde as just female John Wick, Captain Marvel as just female Superman (or Captain America? Thor? I don't care enough), Sucker Punch as feminized versions of some mish mash of other bad action films, anime or video games and so on. Black Widow would be happy to just be a female Jason Bourne like Salt. People justifiably complain this is generally both unrealistic and unsatisfying, as both masculinity and femininity have more dimensions than merely relative physical strength or weakness and relative propensities and aptitudes for violence. It's a testament to how little interest film really has in men or women that simply adding a common but unusual attribute to a character, like maternality (e.g. Mrs Doubtfire), paternality (e.g. Mad Max beyond Thunderdome, Jurrasic Park etc), femininity (Tootsie, To Wong Foo etc), maturity (freaky friday, big etc), masculinity (Victor/Victoria, Just one of the guys etc) even genitalia (Crying game, Boys don't Cry etc) to otherwise superficial characters makes them a little more interesting to classic.