I think there's a lot of merit to this. BEV and PHEV vehicles almost exclusively replace gasoline powered vehicles, makes sense that gasoline demand decreases. Issue is almost all refineries in the west were built at a period where gasoline demand was so high it had to be cracked from other crude oil fractions.
Diesel supply is going to be an issue, Diesel demand is relatively inflexible. The trucks, trains, buses and ships must still move goods and people, regardless of fuel price, heating oil will still be purchased to heat homes and businesses. The current stock of refineries are not capable of outputting more Diesel in current form, Diesel was a low value by-product at the time of their construction, and significant investment would be required to modify the refineries to produce more.
There will be some change in consumer vehicles, GM has already phase out all its small diesels except the 3.0 in the pickups and large SUVs, Ram will likely drop all theirs minus the 6.7 Cummins, and Ford only has the 6.7 Powerstroke left. Both vehicles in our driveway are Diesel, and we're economic choices at the time of purchase, but if replaced today would both be gas pots. But this change will be take 5 or more years to have any appreciative effect on demand.
IMO natural gas demand will continue to increase, particularly for power generation. It is the quick response backup fuel of choice for renewables, and will continue to replace coal generation. Particularly as BEV and PHEV vehicles increase demand in the electrical grid. Maybe we're approaching the peak for heating and domestic use however.