From his original post, there is a clear date he claims the FP rate to have gone up... so this isn't a blanket Gmail FP rate issue, but rather a Gmail or spam blacklist incident, which is quite different from what the summary would suggest. As of right now:
lkml.org Added to UCEPROTECTL2
Uceprotectl2 Automatically Delists Entries
This blacklist does not offer any form of manual request to delist. Your IP Address will either automatically expire from listing after a given timeframe, or after time expires from the last receipt of spam into their spamtraps from your IP Address.
Uceprotectl2 Accepts Payments Or Donations
This blacklist does support a manual request to remove, delist, or expedite your IP Address from their database upon Payment or Donation of fees to their organization. Please note the following; 1) MxToolBox does not in any way advocate the paying of removal from any blacklists. 2) Removal requests that are submitted without addressing the core problem will likely result in your IP Address being relisted in the database which can cause subsequent problems and extended listing periods without release.
More information about UCEPROTECTL2 can be found at their website: http://www.uceprotect.net/
Reason for listing - Net 18.104.22.168/21 is UCEPROTECT-Level2 listed because 36 abusers are hosted by RCN-ASN - Reality Check Network Corp./AS46652 there. See: http://www.uceprotect.net/rblc...
UCEPROTECTL2 seems a bit shady, but I am not blacklist expert.
Also as a side note, any spam filter that attempts context evaluation has a tendency to mark emails with code or special character formatting as spam. Even emails with links. So for someone like Linus to have a higher blanket spam FP rate is also not surprising.
The best gmail feature is the "never treat as spam" filter.