My daughter is 7 and is losing the interest in toys. She still uses her imagination in other ways: playing floor is lava and making elaborate dens / puppy houses / nests etc with blankets and cushions, drawing and making stuff out of craft things, putting on shows. Her dolls, Sylvanians and playmobil only really come out when she has friends over. She and her brothers do still build with magnatiles and colourful Grimms block sets, and often the little playmobil animals come out to live in the houses. She is always making something for her little stuffy bunny to live in / sleep in / eat etc.
Her older brother (9) was obsessed with Lego from 5-8 but now is totally disinterested. He wants sports equipment for the garden, board / card games, football and Pokémon cards, books, football kits. He has never been very interested in imaginative play, now I look back most of that was led by me but left to his own devices he would either build stuff out of blocks / magnatiles / den making stuff, or head outside.
little bro age 5 still into toys and loves franchises like spiderman, hot wheels, transformers etc in a way his older siblings never did.
I think it depends on the child but also I think we expect children to play with toys more than they actually need to. 100 yrs ago you would have had very few actual toys compared to our children, and most of your fun would have been self-made with friends. Even as a child in the 90s I had a lot less toys and by 10 was spending my “playtime” looking after horses at a local stable, out on my bike, going to the park with friends, gojng on long exploring walks either by myself or with friends, reading, making treehouses, building fires and cooking stuff on them at the bottom of our garden. As long as children are still having fun and being social in some capacity I’m not sure there’s the need for constant toys!