Son started getting up on supports. Now it seems like the whole apartm…

Son started getting up on supports. Now it seems like the whole apartment is unsafe. He starts getting up even against the wall, sofa, in crib (there I'm afraid he might fall on wooden slats), even at me crawling. He doesn't want to lie down or crawl anymore. The scariest thing is that it's hard to run away and nowhere to leave. All toys are not interesting to him, even new ones, only get up and climb somewhere. In addition, my mom and grandmother scared him that this is very early and there may be crooked legs, spine... How can you secure space for a child and is it harmful?