It seems to me both views are valid with two caveats. The advice I have is that any pool is more proof against earthquake if full rather than empty. The second id that an empty pool, no matter how much shock and stuff you add to it, can be seriously disgusting by the spring.
Becauuse I live here permanently, I keep mine full year round. In the winter I reduce the pump from about 8 hours to one, or at most two, per day. I continue to clean and to put in multipupose tabs, which dissolve much more slowly because of lower temperatures and reduced pumping through the filters. Because there is an increase of rain born dust I still clean the filters once a week. If I travel abroad over the winter, I pay someone to check it every fortnight and clean if necessary. Doesnt cost much. I fact the last guy refused payment and I had to buy him and his wife dinner!!
It has worked fine for me for 12 years and I wouldn't be without my pool.