Yes, if you look at the crash scene, there is no aircraft at all. if it came down 737 max style, there would be a crater and nothing left, if it flew down, there would be a crash trail and large parts of the air frame intact and on fire, if it blew up in mid air there would be a very large debris field and not very many large bits of the air frame intact. So its either a catastrophic explosion in the air caused by ?, engine explosion, missile fragmentation, or bomb, but with a bomb fragmentation would inside to out, rather than what looks like can be seen.
Ukraine has withdrawn its earlier statement, so interesting, watch this space. They have the black boxes so I wonder what will be on the CVR and did the pilots know anything about it.