Are thank you cards not a thing anymore?

I’ve been planning on sending out thank you cards next year because, well, it’s thank you cards. I ordered ones to match the invitations since it was less expensive to buy the whole package. However, we’ve also attended two weddings in the past year, and haven’t received a thank you card from either couple in the past 6 months. Is this a thing now? I’m still going to send the cards I have since I’ve already purchased them (and I think it’s a nice thing to do), but am I missing something?

Edit: Thanks everyone for the input! Yes, I am going to hand write the cards; it’s only 42 if everyone shows up, which they likely won’t. I might even print a little wedding picture to put in them, might as well go all out haha