Sorry for the thread drift OP, it's my fault, but sounds like you have a solution anyway ;-)
To each his own of course; I'm just suggesting that a brewer presumably has a large SS kettle, so choosing to repeatedly pour boiling hot wort into a plastic fermenter does not seem to be the best choice considering the available options. Of course you'll not find any engineering studies that subject our fermenters to what we're likely to do to them in a repeated cycle of no-chill, clean, sterilize, repeat, but does not the following passage give you pause? Nothing about leaching of course, but degradation is not something I would want either.
".. Of particular interest are reports of premature polyethylene pipe failure in the presence of common
chlorinated water disinfectants such as chlorine (hypo-chlorite), chlorine dioxide and
chloramines. Studies in France by major water utilities (i.e. Suez Environnement and Veolia
Environnement) have linked factors such as type of disinfectant, average service temperature,
disinfectant concentration and pressure to HDPE pipe oxidation and failure. With a growing
number of European studies documenting premature aging of HDPE of all types,..."