One of the traditions on the Defiant during the Dominion War was to literally stack up the burnt-out phaser emitters in the mess deck.
Yeah, this thing was TOTALLY a military warship, and, honestly, it heralded in a new era for Starfleet where they FINALLY admitted that, yes, they should probably have some segment of them that /is/ proper-military, and capable of holding off Big Bads like the Dominion.
Of course, then there's Section 31, which is a whole different ball of wax...
In any case, yeah, the Defiant is massively overpowered in every possible way that word means, to the point where it was an absolutely naked deus ex machina.
Still a hell of a ship.
And, as you will note from the photos in the video, OF COURSE the ITT isn't standardized, in any way, shape, or form. There's, like, five different versions of the blessed thing, because NOTHING in the Star Wars universe can EVER be standardized.
As much as I like to rip on the Mon Calamari for producing basically one-off capitol ships, the entire universe has completely buggered their logistics chain.
"Oh, you want parts for an ITT? WHICH ONE?"
I mean, I guess if your entire business model consists of, "Burn planets to the ground, and if your guys die, we'll just forcibly convert replacements from the available populace of the next planet," you're going to build some... interesting weapons.
They work well enough that even non-human advanced species are utterly terrified of them, though, so I guess there's that.
All clips and photos by way of The Chronicles of Riddick - https://amzn.to/3mZJr7j - and you really should watch the entire series of movies.
I have no idea why someone thought a massively overly-complicated, massive pain-in-the-ass-to-maintain monstrosity would make a good startfighter, but here we are.
At least it has a lot of guns?
Many thanks to Deputy Rust - https://twitter.com/DeputyRustArt - for developing the Tomboy Mandalorian.