The article also addresses Mahler's point: "(is) vinyl ... the superior listening medium? Spoiler alert: it's not ..." Which, it seems to me, tells you all you need to know about this source.
But, to address his major point, a little perspective helps. Consider a short list of things that off-gas bad stuff: plastic flooring, synthetic carpets, furniture, construction glue, caulking, plastic window frames, plastic siding, some insulation, many paints and varnishes, most plywood, shower curtains, plastic blinds, cleaning products, car interiors (for extended periods of exposure), and foam mattresses (for 8 hours of continuous close exposure - every night). Automobiles. Trucks. Power plants. Refineries. Of course, with exceptions.
IMO.