I don't know what "social jetlag" is, but the 'lag' in jet lag is the latency between a newly imposed sleep schedule and the body's circadian rhythms. You can't

I don't know what "social jetlag" is, but the 'lag' in jet lag is the latency between a newly imposed sleep schedule and the body's circadian rhythms. You can't have a permanent "lag" - any "lag" effects will be gone within at most a week or two. Whatever the pros and cons of DST, "jet lag" is not the right way to describe them.