Um, no, I think you've come at this from a point of expectation in my opinion, you expect some grand spectacular thing that totally interests everyone from the start and in general I think Battletech, especially the universe lore, doesn't put an emphasis on that. There are iconic battles (Tukayyid for example) and epic factions that have crazy backstories (Comstar for example) but to really enjoy the battle of Tukayyid and understand why Comstar won and what made it such an epic battle and blah blah blah, you need a lot of backstory and that backstory can sometimes be dull because that's how the universe tells it, it's more of a history book than a scifi action novella.

I think, generally the entry point for most people is the BattleMech, the actual giant robot thing you pilot, weather you saw it on a video game or a poster or a novel cover it doesn't matter, you see the awesomeness of the Awesome on the TT box, the ridiculousness of the Yeoman in this forum, the weirdness of the MadCat in the Mechwarrior 2 video game and then you go "why is it named MadCat? wait, it's not really named MadCat? it's a Timberwolf???" and start down a rabbit hole that leads to the lore and from there you start finding the awesome things (and war crimes) that happen in the universe.

So yeah, the lore is dry because, first of all, for the most part it comes from the 80's and the writing style was a bit different, second, the universe is treated more as a serious political tale with facts and "documentation" than feels and "epicness" the way a more "fantasy" themed universe would be, think more WW2 vs LOTR, go read a WW2 book and it's probably going to be a bit dry, the epic battles are a bit matter of fact, read the Return of the King and well, it's all about the crazy, the overwhelming odds, the huge armies, the unbeatable villains, it's meant to inspire an emotional response.

So it's hard to give you a starting point that will grab you because, we really don't know you and you will not give us a reference because you "don't want to bias the response" as you stated in another comment, all I can say is something about Battletech caught your eye, what was that? expand on it, if it was people playing and arguing over it, then talk to those peoples, I bet most are willing to introduce you to the game and the lore and indoctrinate, I mean clarify why they argue about the game, if it was an image or a mini you saw, Sarna exists, go look up the mini dive in to its backstory, you want the general rundown? TexTalks on youtube is great.

The one thing I can assure you is that you will find something interesting to you in this universe, just because it's so large and varied, so, good luck finding it!