I don't think it's that bad, considering where FRAND comes from: It's a contract term they put into agreements that industry bodies require members to adhere to before they'll accept known patented technologies into industry standards. If it turns out that the courts interpret it to mean something disastrous then they'll just start using a different term for future standards. Or just put the actual licensing price in the contract.
In theory that would still leave a problem for all the existing standards, but I don't see how that problem is significantly worse than the existing problem with submarine patents that were never FRAND in the first place because the patentees didn't participate in the standards process.
>I didn't see any comment regarding anti-trust law from this judge and I don't know if that topic was ever on the table in this case.
The relationship between patents and antitrust is by nature inscrutable. The whole point of a patent is to create a temporary monopoly to reward the inventor with monopoly profits. But the patent is only supposed to cover the claims -- so when a patent is essential for a standard, the patent inherently can be used to block implementation of the standard, including those aspects of it that supposedly aren't covered by the claims.
The result is a situation where either you de facto prohibit the patentee from enforcing the patent against any infringer (i.e. everyone) who is implementing the standard (perhaps in exchange for some almost certainly below-market royalty chosen arbitrarily by the courts), or you de facto allow the patentee to expand the scope of the patent to the entire standard rather than only the claims as it ought to be. There isn't really a lot of middle ground: You have to pick whether you want meaningful patents (else anyone can just make a standard around it and claim a right to violate the patent's guarantee of exclusivity) or meaningful antitrust (else anyone can allow their submarine patents into a standard and then sue the world). There is no guarantee that the courts will be able to find a solution to that capable of making everyone happy.