Six years can go a long way in changing your perspective on things.
When I first started posting here, I was too busy despising Lords of Shadow to really give it a chance to entertain me. As a long-time fan of Igarashi's games, I was up in arms from the day LoS was announced: I didn't like what the game stood for, I didn't like the way it was being touted as a "reboot", and I especially didn't like what it meant for the future of the series: IGA sidelined, Castlevania shoehorned down the God-Of-War reboot path with an unknown developer. So when I actually got to playing it, it's no surprise I was disgusted: it wasn't the game I wanted to play, it fit none of the "standards" I had in mind for the franchise, so I naturally dismissed it as crap in as little as a few hours.
The next two games, at first, didn't exactly help change my sentiment: Mirror of Fate was a rookie and mostly excusable try at a 2D platforming game from a developer who had never really made one, and we all know how much of a mess Lords of Shadow 2 was. But after dejectedly abandoning LoS2, and dusting off my copy of LoS just to see if it was really any better than I remembered, I actually found myself having... fun. You see, Lords of Shadow ended up scratching an itch I didn't realize I had, because in retrospect the game has a whole lot going for it - most of which I glazed over trying to find a Metroidvania game in something that obviously wasn't.
Nowadays, I find myself resenting the way Lords of Shadow was marketed far more than I do the game itself. LoS happened to be a very promising hack'n'slash title that got mispackaged and thrown into the wrong franchise. Had it been released on its own, it would've probably been seen as a homage to Castlevania on the whole - it's packed with enough of that gothic aesthetic to make any Castlevania veteral feel at home. But for me, that's where the comparisons should've ended.
Look, the game itself is startlingly beautiful and imaginative; it's absolutely crammed with content that always oozes effort, even if it isn't all great; it has a simple, elegant combat system that never stops being challenging; and it comes with a good story to boot. I still find myself revisiting Lords of Shadow every once in a while, because you can tell pretty much throughout that the devs really wanted you to be impressed and have fun, even if they didn't always know what they were doing - and I'm humble enough to appreciate that. It's a telltale sign that a developer has some good, hardworking people behind it, even if their direction ends up screwing the sequel.
In short, I just feel like the original Lords of Shadow wasn't really a Castlevania game because it never really tried to be; the people at MercurySteam evidently wanted to do their own thing, and to their credit they actually did it pretty well. They just didn't make the Castlevania we were all expecting - and in a way they don't deserve all of the bitterness the game has seen over the years.
Because to be honest, if anything deserves that kind of bitterness, it's Konami.