That's been my read too. If you're in the proper health to handle a vax like this, go with J&J. It's a one dose deal, and is the one that isn't supposed to have the mRNA in it.
Pretty sure I had it back before in winter 2019, so not too worried about getting vaxed. Haven't had, and don't intend to get, the COVID vax, but, if I felt it was necessary, I'm leaning toward the J&J. However, I'm going to avoid any vax, for anything, until I feel the need for it.
Prior service military, so I've had many vaccines in the past, but nothing recently. Caught an really rough flu-type illness a few years ago, maybe 2016ish, got the flu vax the following winter. Not a single Doc visit since.
Been known as a bit of a rebel most of my life. Get asked a lot about what I'm going to do in many situations. What I feel is right for me at the time, is my answer. That has served me well, so far. And I ain't no spring chicken.
Morbid as hell anon, but it is true.