Not true. The armor does serve a purpose. It's body armor first and it's theatricality second.
"Hey, what is that?"
"Some kinda body armor, he's human after all".
The 1989 suit is what started the idea that he wears full body, segmented armor decked out in black. They used rubber then, and Schumacher and Nolan followed. He wasn't supposed to look like an armored, bat inspired motorbike SWAT guy with a helmet. He's supposed to look like a giant, 6 foot Man-Bat. What is going to strike fear into criminals and convince them more? The MAN that is clearly wearing heavily paneled armor with these massive football player shoulder pads (with a nice, velvet looking cape to boot) or the man that is wearing an animal looking suit that looks like a cross between a man and a beast with a leathery, skin like cape (that actually lifts his "wings" like a Bat for the full effect)?
It makes perfect sense that Batman would make his armor plating look like actual physique as opposed to armored plating. Why would he want his enemies to know he's not only fully decked out in armor, but also merely a mortal man that can't take a bullet or knife? When they see all these panels, the knee pads, the elbow pads, the shoulder pads, the neck brace, what message does that send? That the guy is vulnerable. Compare that to the guy that appears to be wearing nothing more than a target and a belt that EATS bullets, falls "dead", and then seemingly appears to rise as a ghost from the dead due to his
hidden armor.
The segmented muscle armor makes sense. It still serves the same purpose the TDK armor has with it's protection and bullet proof functionality, the plus side is that it looks like he's not wearing armor at all. If anything, the TDK armor is "cheesy" and frivolous from a flourish perspective because it's so in your face. The Begins suit got the point across and retained the animal quality whereas the TDK suit just went into overkill. It's like a Batman-soldier toy variant where the armor is the focal point, not the Bat aesthetics. The practically hidden Bat emblem on the "Bat bra" of the TDK suit is proof of this. It's all about function, not style, when the suit should be a little of both. It also makes more sense that the 89 suit's vulnerability points are on the sides and back behind the cape as opposed to, you know, all the vulnerability open points those jigsaw panels create on the TDK suit.
It also helps that the '89 suit is a helluva alot closer to this,
Than these,
It's also the only one (along with the Returns suit) that makes the cape and neck area look more organic with the neck than the others that use the silly cape clips and Superman cape tucks. The '89 cape and cowl look like it's a part of him, like those are his wings. The others? He's clearly wearing a cape.