Ya for me it depends on the age and how LONG they would be spending in that position .... infants who lean back from a crawl into a W sit for their 60 second attention span to look at something before crawling off I just 'ignore' but as soon as they are sitting for many minutes to explore intently at something I too just gently 'remind' them to stretch out their legs to avoid the hips being in that position for too long.