Am I doing something wrong, or is the quality of plastic from figures these days becoming much more temperamental and less stable than the plastic from things that are like 20+ years old.

I have figures that are from the early 2000's that don't have any, or barely any signs of tacky/stickiness from plasticizers or deterioration. Maybe it's the paint/finish that's causing it too, I don't know. But most figures that I've gotten within the 2010's+ seem to develop this issue within 5 or so years. Every single one of my Bandai figures, Street Fighter, Dragon Ball, any of their accessory packs all have it and it's definitely worse on anything that uses soft plastic. I have the OG Vashe the Stampede from Revoltech that doesn't have any whatsoever, but my OG AY spider-man has it. Even my AY Venom/Carnage have the sticky/tacky feeling to them. I also notice that this doesn't seem to happen as much with any of the PVC statues I have either. I have an old DBZ Banpresto from 2009 that has no stickiness to it either.

I have a central A/C unit in my house, so it's not like it gets to sweltering temperatures in here in the 2 months of summer. Is there something I'm doing wrong, or is this just the new nature of the beast for new-age action figures? What can I do to extend the life of my figures?