Taiji not about generating power

Chessman organizes comments made by Tom into a single post. One of Tom's comments really got me thinking. The comment pertains to something he got via the HJS line:
According to him [HJS], Xingyi genuinely aims to generate internal power. So does Bagua. It is not the case with Taiji. In Taiji, there is no real power generated. Instead, it is a “perceived power” that Taiji is concerned with.
Hmm... This really got me thinking about my own practice. I think I've been approaching things in the wrong perspective. I've been focusing on the end result, on the flash and the bang of fajin and therefore have focused on creating power. I've been taught that when doing fajing, I should shift my weight from kua to kua, instead of leg to leg. This is a minor distinction, but a very big one and I could definitely tell the difference in the amount of power and connectedness I felt, but is this the wrong way? If taiji is about using your opponents energy against them, how can I practice fajin with no real incoming force to redirect? I guess I could imagine the air coming at me or something, but I don't think that's right. I posed this question to a friend of mine that trains in CZH system via HJS and he basically was taught:
In the form, there are no strikes
Whoa... Now, I believe this aligns with the notion of no power generation and is a way to link the left rear elbow attack with the right hand punch (or maybe better to be called "forward motion"..), but in any case, I definitely feel this is an interesting principle to explore. But then again, in most forms I have learned, before any punch is a block. In the chen form I train, the block is done in conjunction with a shifting weight into the rear leg and then the fajin is done with shifting in the reverse direction. Maybe that's the "incoming" energy I am working with? But to me, this still feels like energy I am generating myself...