As someone else said, there's a lot of distance between "criticising" and "praising".
There's also a big difference between constructive criticism ("Thanks for putting the bin out but it's actually the brown one this week! Confusing isn't it!") and nit-picking ("FGS! You've put the hangers the wrong way round in the wardrobe!")
And there's likewise a difference between thanking someone for completing their task ("Oh you've put the laundry on - thanks, love") and empty praise ("Oooh, fabulous job on mowing the lawn, darling! Next door will be SOOO jealous of your manly skills!")
What is important is that there should be an equal balance of negative and positive feedback. If all someone ever hears is "you haven't done it right!" then they simply stop listening. If they know they have a good chance of being recognised for either doing something right or wrong, they are more likely to listen, and more likely to do it right and do it promptly.
That's the way we teach kids, right? The same basic principles apply when we're relating to adults. We still have a need to have our good deeds recognised. Whether that's in a romantic relationship or from an employer!
This is, however, a long way from the kind of berk who thinks they deserve "brownie points" for basic parenting. No, mate, you do not get a gold medal for changing a shitty nappy. But hey, maybe you could award yourself a brown medal, as long as you award it to every single other parent on this planet...
Only OP knows which category her DH falls into, and where her comments/critiques/praise fits into the picture.