Claim language is obtuse because it's for lawyers, not laymen. An engineer can write the description, but only the lawyer can write the claims.
It's immensely complicated, but if Unity does someday assert this patent against someone else, then you all are helping the defendant when they have to defend themselves. At least, I hope the defendants find this discussion.
The defendant's standard tactic is usually to file for IPR, or PTAB reexamination of the patent, which is like a trial without a courtroom. The cost figure I recall is $500,000; maybe it's different now.
If the IPR succeeds, then Unity is SOL. There was a Supreme Court case recently where some plaintiffs tried to get the whole IPR system thrown out. They failed, as far as I know.
Lastly, the whole back-and-forth with the PTO is in the public record, if you know how to find it (and if you think reading claims is difficult, wait 'til you try reading a prosecution history!)