Relief from that requirement would allow pilots to practice instrument procedures solo, without a safety pilot, in a manner that allows them to stay legally current without violating social distancing. I understand that this might not provide the same level of proficiency as simulated instrument conditions, but in my experience flying instrument procedures in VFR still provides significantly enhanced proficiency.
We have seen a workaround for the medical requirements, which are also notably in the regs. Also, I have access to a plane, but not a sim, and am out of currency (so no actual), but not far enough out to need an IPC.
There is no "workaround" -- the FAA just said they won't take action if you violate that rule. And I can see their point -- I don't think the simple passage of three months' time is likely to make you unfit to fly if you're following the rules and guidance in 61.53 and "IM-SAFE". OTOH, you're asking them to accept flying in visual conditions as being the proficiency equivalent of flying in instrument conditions. That's another story entirely, and my 4000 hours of instrument instruction given tells me it doesn't work. I'd think the same about the other recent experience rules (like landings), but I can see them flexing on flight review dates because that's more like the medical exam issue. But we'll see what the FAA says.