I'm not sure food blogs are the best choice for this. The article goes on to talk about BPA and phthlates, but neither of those exist in pure HDPE or PP.
BPA is found in polycarbonate plastics (acrylic) (Edit: brain lapse, acrylic is PMMA) and epoxy resins. Phthalates are in PVC (vinyl). Using the word 'plastic' as a monomer mononym (Edit: lol wrong mono) is dangerous for many reasons, and causation vs correlation is one reason why.
I mean, definitely go with glass if you have the choice, sure, but let's also actually try to be accurate if we invoke the scientific method.
I would also love for there to be really robust testing of food containers of all varieties direct at the manufacturers, with heavy fines involved if they're using additives but claiming it's a food-safe plastic.