No, we haven't seen the back of wearing heels, particularly as they're not compulsory! Fashion is such an individual choice, thankfully, so those who want to wear heels will continue to do so, and those who do not, will not.
I think once life begins to return to normal, many will relish an opportunity to dress up again. I have really struggled during lockdown and been quite depressed about not having an opportunity to dress up, so, on occasion, get dressed up to go to the supermarket and wear heels. If anything, being mostly home in leisurewear for almost a year has really made me appreciate my fancier clothes and high heels, and plan to wear them so much more once I am able to do so.