In my humble opinion, it was the green policies of the Biden administration that were encouraging automakers to hybrid or electrify their truck powertrains because of the MPG and emissions standards they wanted automakers to meet. Then, with the second Trump administration, the automakers are no longer being incentivized to meet the standards that the previous administration was trying to apply. I'm not here to start a political argument or tell you which policy was right. There's arguments for both policies. You're all smart people and can decide for yourselves which policies are better for America.

However, what I see happening under the current administration is that automakers will be less likely to invest heavily in hybrid and electrification because it did not sell all that well in trucks (Specifically all-electric trucks) over the past few years, and there's no government push for them to do so. I would expect only minor refinements to existing hybrid platforms that are selling well, as it's more market forces now, and less government policy that's driving the automakers.

I think it's wise for you to be considering gas mileage, especially knowing that at times (like now) gas prices can get pretty high, but make sure that you're considering total cost of ownership if you aren't already. Every redneck cost analysis I've ever done on identical trucks, one with hybrid, and one without, (say F-150 Lariat Ecoboost and F-150 Lariat Powerboost) the difference in purchase price is significant enough that it sometimes takes 6 or 7 years to break even in cost on MPG. At that point, the hybrid battery is getting old and may need replacement. That's at least $3,000 - $7,000 depending on what battery you get, and who's doing the replacement. And I'm sure that this is obvious to you, but there's no scenario where buying a new full-size pickup will eventually pay for itself instead of continuing to drive the Tundra you have.

There could be a scenario where the hybrid powertrain could be cheaper long term than the equivalent gas only powertrain, but I've had trouble finding it myself. If you find a scenario where the hybrid powertrain is definitely the cheaper way to go long term, please take it and let us know how you did it, because it'll be a great deal for the consumer.

I think the best use case for the hybrid powertrains in trucks right now are the trucks that have beefed up inverters and large capacity outlets in the bed where you can run things like power tools and welders at a remote job site. I think those are the conditions in which the hybrid powertrains are most worth it.

All that to say, take the MPG into consideration, but get the truck you really want, and feel good getting behind the wheel of. Best wishes to you.