I guess it could be debatable. I personally wasn't willing to take the risk and would do any and everything in my power to have the quickest recovery possible without set backs.
It takes 6-8 weeks for the fissure to heal under the best conditions. Three weeks post -op is half way there for most. Others have said it can take a couple of years for that area to totally be as if a fissure never happened.
I'm 9 months post-op and still wouldn't lift anything that would cause pressure or straining in that area.

You may be able too
I wasn't willing to experiment and take any chances. Nothing was worth screwing up my recovery or keeping a fissure...