[pvg]

It just isn't the case that you can't have a Show HN without signups - it's preferable for the friction-to-try be as low as possible but sometimes 'as low as possible' is, in the given context, still a fair bit of friction. Lots of Show HN's are in very early stages and unpolished, some use finicky/newish technologies, etc. If this particular one is too much of a hassle and you bounce off, that's fine but the suggestion the poster is breaking some sort of rule here is inaccurate.