I think the semicolons are correct too (though the colon you mentioned would add a lot of clarity). This grammar rule comes up infrequently enough that it can be jarring to encounter a semicolon before reaching the end of a properly formed independent clause.
At least link to the original video and author (Natural Habitat Shots) instead of a crappy aggregator account:
https://youtube.com/shorts/Zxf2MgYCOm0