Why is YouTube's embed cache so large?(nostr.moe)

https://nostr.moe/notes/nevent1qvzqqqqqqypzqwlsccluhy6xxsr6l9a9uhhxf75g85g8a709tprjcn4e42h053vaqydhwumn8ghj7un9d3shjtnhv4ehgetjde38gcewvdhk6tcprfmhxue69uhhq7tjv9kkjepwve5kzar2v9nzucm0d5hsqgryyzjde86tswyhsa2299y93keagf9my99af3gxjndr7590ed9qhcj4ra3s