No-one's arguing that it's not a depleting asset - that was self-evidently true, right from the very first barrel extracted - but "kicling the can down the road" would appear eminently sensible given the tech you advocate is not capable of meeting current needs and won't be for a good number of years.
Gas isn't globally priced in the way crude is BTW and not being able to keep it (or oil) to ourselves is irrelevant - selling it provides $ that can be used to insulate households from the effects of energy crises or, maybe, help pay for the transition to renewables.
No, gas isn't priced in the same way as crude. Unfortunately though, all gas entering the UK grid, whether from the North Sea, Norway or LNG tankers is priced at a single virtual hub called the National Balancing Point. This means that the UK, despite having domestic NS supply, has close to zero insulation to world prices. See below for the price of UK gas for April delivery - spotting the outbreak of the Iran war isn't particularly tricky here sadly.

Therefore, you have the same issue as crude, you are at the whim of the global market and increasing domestic supply actually doesn't help you very much in terms of energy self-sufficiency.
No one is pretending that electrification is easy, or possible to achieve 100%, but there are very obvious current technologies that can vastly reduce our reliance on gas and oil which should be the focus of our attentions if we want to reduce our reliance as a nation on gas and oil. The 2022 energy crisis sparked by the Russian invasion of Ukraine should have been a sufficient wake up call but this latest episode is a reminder. The effects of spiking gas and oil prices aren't just felt at the petrol pump and in your gas bill either, the resulting ramping inflation outlook causes rates to spike with all the economic implications of that (especially for people taking out mortgages!). As a nation, being in control of our own destiny should be paramount.
