Yeah, I see this..... I don't see them acting like ESTPs so much as wannabe SPs. They want to be seen as in-the-know, able to mentally/emotionally handle intense/difficult physical feats off the cuff, cultivating hobbies which are very "tangible". Whereas that seems natural in SPs, it seems contrived in them. I think this is especially common with INFJs males because of the pull of Fe to meet cultural standards & the male ideal. I see it waaaay less with female INFJs.
My INFJ definitely has a wannabe SP side. I've seen many SPs with a wannabe NJ side too. They tout their spirituality & try & seem deep, but it's cheesy. I think they probably make good suckers for NJ con-men.
It's funny, because I DON'T see this with NPs & SJs so much. It seems that they are repelled by their inferior functions, but SPs & NJs are fascinated with theirs (and each other). Of course that is a generalization & does not hold true for all.