Yesterday, I was in the park, training aikido weapons with friends from several different aikido clubs. There was no dojo. We were in shoes and on hard ground, so there was no seiza. There was no kamiza with a picture of O Sensei to bow to or raise our weapons to. We did not wear gis or hakamas. Were we still training aikido, or had we invented something else?
Aikido-based jujutsu? While I make no assertions as to what
is, I can see how removing the etiquette might make it something else.
...Bearing in mind I tend to take the approach that whatever people want to call something makes little difference beyond communication needs (i.e. call it what you like; conversation is for ironing out individual semantics).