Meh and it will never be.
I would not categorize BTC as a product but since we seemed to talk about product life stages here. Here is one from my findings about "growth stage".
"Growth Stage is the period during which the product eventually and increasingly gains acceptance among consumers."
Now to put it into perspective of Bitcoin, it hasn't been adopted a lot yet that most are dreaming of so yeah pretty much we're still in the growth stage.

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Source: https://courses.lumenlearning.com/boundless-marketing/chapter/product-life-cycles/