Family insisting on throwing a bridal shower even though we cancelled our wedding

I’m not sure what to do here and could use some advice. My fiancée and I had to cancel our October wedding due to Covid restrictions and safety concerns. My aunt, sisters and mom still want to throw a bridal shower for me but all of the etiquette guidelines I see online almost universally say if you aren’t inviting someone to a wedding then you shouldn’t invite them to your bridal shower...right now we don’t have plans to reschedule our wedding and are looking at eloping instead...we *might* have a vow renewal and do all of the big wedding stuff in a couple years once Covid is safely in the past, or we might be having babies and not have time for that sort of stuff. So ZERO guarantees. In the meantime, we wouldn’t really have any guests at our elopement, per se. I have explained this to the parties involved and they basically think I’m being silly, and still want to do it.

To make me feel more comfortable, they are going to include a letter with the shower invitations explaining the situation and stating gifts won’t be expected, but will be welcome...and I think that’s as close to my way as I can get it (my position is if we are having a bridal *something*—not sure what you would call this sort of thing when gift-giving isn’t involved—I would prefer gifts not being encouraged at all, but we can still do the cute games and stuff if they would like). So what do you think? I know things feel like the Wild West right now and the rules are going to inevitably get fuzzy here and there...but am I allowing myself to be an accessory to an etiquette blunder by not adamantly shutting this down? When I suggest that they make me feel like I’m ruining *their* fun. (Woe to those who stand in the way of the women in my family’s fun. Especially in the decidedly not fun times.)