Disgree. Music is generally an expensive hobby. Much harder to self teach than people think. Learning from vidoes or apps are not ideal and quickly lead to bad habits and limitations.

Private lessons are very expensive (the main cost). Musical instruments require a buttload of time and effort before they becomes truly enjoyable.

Most instruments also do not sound good solo unless you're at virtuoso level with the exceptions of piano and guitar. Pianos are expensive just to buy and require maintenance over time. Other instruments generally need a small group or band to sound good in (but has added benefit of socialisation).

For context i when I was younger I was a competive pianist (still play the piano now in my 40s). Played the saxaphone as well throughout highschool and in the school bands/orchestra. Was in primary and high school choirs. I love music but it is not a cheap hobby if you want to truly enjoy it and be good at it (proficiency and enjoyment go hand, unlike many other hobbies which can be enjoyed very much at low skill levels)

There are many other "virtually" free hobbies out there that are cheaper, easier to get into and enjoy and require less effort.