npub129gvast08lj986yftn7q5qlnj8yfqufxx0m33s9u5xssjm8c64rsve4kwg (npub129g…4kwg) I strongly disagree. Obviously you have to start with one language. 😉 And yes, you should try to get some deeper understanding in at least one or a few.
But there is absolutely no need to master your first language before looking for other ones.
In my opinion very few people get the difference between a theoretical concept and its concrete implementation without learning multiple languages.
We have way to many developers thinking that OO is identical to what Java does. 😉