You have to adjust the price of harmonicas (assuming you're talking about diatonic ones aka blues harps) to scale for this discussion. A $2.50 harp isn't a beginner's instrument, it's a child's toy. A beginner one would be more like $20. That's where I started and it would bend notes just fine. You can't really spend much more than 60 bucks on a top end harp.

The OP sceenshot is phrased negatively, but the basic premise is in a lot of hobbies people don't need the top gear because beginners won't actually be able to tell the difference. Mid tier gear is a different story.