I dunno, I prefer 1/4" connectors. No one walks behind my amp that can accidentally kick a speaker cable, it's only 2 feet long, doesn't hang. My amps are 500w or under, not really high powered.
I too had a knockoff speakon stick in my amp. I have remade it with genuine Neutrik speakon but I rarely use it.In 41 years I have never had, or heard about , a speaker cable come out during a gig, never, ever.
Speakons were made for high wattage touring PA setups, not for me with my 200w Elf , which, btw, doesn't have speakon sockets for obvious reasons.