Such an interesting thread!
I think, as always, it's all about context. Those with bad experiences, it may not be entirely down to the dynamic of who did the pursuing, it may well have ended that way due to it not being a great match, attachment style etc but I can see why you may write it off.
Also, so many variables around what is pursuit, was there mutual interest, levels of confidence on both sides, levels of maturity on both sides, what experience each bring to the potential coupling.
I don't find the 'if he's not chasing he's not interested' line very helpful as a broad brushstroke as I think women should be empowered to go for and be clear on what they want. However, in saying that, it's quite a handy thing to bear in mind, before you talk or overthink yourself into a situation where you make a move on someone where there is no mutual spark (as seen on the Relationships boards quite often).
I 'pursued' my ex husband. But as PP, if I don't do a bit of pursuing/making it known I'm interested, I'm not sure I'd ever be noticed.
But being single now, it's so different with a busy life and kids, I might need to be more direct to be sure I get what I want, on the terms I want.