Yes, because a 22 year low is so much better. YouGov's never had them lower in the company's existance anyway. And to be fair, the party was called "The Democrats" until October of '89.
I was just pointing out that 7% wouldn’t be an all-time low; not that the LDs current polling is anything better than dismal.
Anyway, assuming your rejection of the pre-Oct 89 data, the new benchmark for “all time low” would presumably be the series of 5% results between Oct 89 and Jun 90 (same source as above polls), the last one being:
ICM/Guardian, 9/6/90, LD 5%
