Wow, just wow, is all I have to say at this juncture.
If one could actually spoof the real-time Garmin, let alone the weak Strava (delayed upload) data file, then all these single-effort extreme endurance stunts become suspect.
Assemble a tight-knit conspiratorial team (support crew) for the bigger attention-getting stunts, like a Guinness World Record attempt? Well, the possible motivation, besides basic attention seeking, would be for participating team members to reciprocate and help each other with their own goofy extreme endurance stunts in the future. 'Sponsors' (i.e., shoe sponsors, gel sponsors, etc.) latch onto each of the attention-getters to garner even more attention for their product. Indeed, look how many authentic sponsors latched onto the previous RY fraud.