So my opinions might not be the most valid, as I only watched like.....7 minutes of this movie (my siblings had it on) but from the tiny bit I saw, I wasn’t impressed. I am a Sherlock Holmes die-hard fan, I’ve read every single one of the original stories by Sir Arthur Conan Doyle and loved them all. When I saw that Mycroft was apparently the ‘abusive guardian’ archetype I was actually upset. I still am. He isn’t an antagonist, he’s Sherlock’s brother for Pete’s sake. I hope that isn’t his entire character in that movie, that isn’t even remotely faithful to the originals. (Also, I’m like 99% certain Sherlock doesn’t have a sister at all in the originals, but it has been a few years so maybe I’m forgetting some off-hand mention. She definitely isn’t a character, if she even exists.)
If they made Sherlock ‘too human’ and now they’re being sued, well, that’s on them. Sherlock isn’t human. He’s a drug-addict, a self-proclaimed sociopath, and a mad genius. He is anything but human. I was even mad at the show Sherlock with Benedict Cumberbatch for making him too human, and they still had him mostly insane. (Sherlock is still my favorite TV show of all time.) I wouldn’t expect a lawsuit like that to win, it is mildly ridiculous, but I’d still say they were wrong. That is, if they did, in fact, make him overly ‘human’.