So I'm noticing. I started one fight with two archers and four melee against five PCs. This is one of the scripted fights in a canned adventure. I didn't even use any real tactics other than "melee guard the archers" and it nearly resulted in a TPK. I cannot imagine what proper small unit tactics style play would do. But, to be fair, the players were rolling crap the whole time.
This is the same group I mentioned above who stood stock still, refused to move, and refused to use improvised weapons. This is also the group who's knight tank in plate and closed helm put his highest stat in INT and only has a 10 in swords, his main weapon. A caster who was so afraid of taking an opportunity attack that he stayed in melee for five rounds taking hits almost every round. Luckily he dodged most or I rolled low damage.
The modern attitude of "LOL it doesn't matter what I do because I can never lose and never die LOL" can go do nasty things to itself.
Again, modern games have a lot to answer for.