I remember seeing a Paul Gilbert instruction video a while back where he talked about the importance of being able to play a single note, while hitting it with a full on rock and roll windmill arms technique. This is mostly a matter of muting the other five strings effectively. But hitting a note like you mean it really matters.
And you can have a great learning experience on an acoustic. There are a number of advantages in terms of learning on an acoustic:
1. It's portable - you can take it anywhere
2. You can easily hear it without headphones or an amp
3. Well suited for chords and melodies (typically the first things you learn)
4. Slightly heavier strings means that your fingers get stronger, and playing an electric guitar later on will seem much easier
5. Great for collaborative learning, easier to play with other people
6. Light weight compared to most electric guitars
7. Acoustic guitar "covers" of popular music (eg. Bieber etc.) are a "thing" all over YouTube and make it easy to learn songs people will recognize
8. If you appreciate classic rock, folk, blues and 90s alternative, these genres are typically chord-based, and easy to learn on acoustic too. Any Beatles song. Nirvana unplugged. Think Layla electric vs. Layla unplugged.
9. Fingerstyle is very rewarding. Eventually you might even get as good as Tommy: https://www.youtube.com/watch?v=cPkQn5nDTZs
Acoustic is a great way to get started, and learn, and most importantly a great way to develop GOOD habits.