Bitcoin is fast becoming a universally accepted cryptocurrency and truly so, it has established itself as "somewhat" parent coin to the likes of Etheruem, Litecoin, Dogecoin and many others.
Few years ago, some many predicted bitcoin was going to fade away like some other cryptocurrencies but instead of falling off bitcoin has grow stronger and have been widely accepted for transactions.
The biggest breakthrough for bitcoin is seen this year, the coin value has consistently rise and even government of most nations are endorsing and legalising it for transactions.
I am not sure it's really considered the "parent' of other cryptocurrencies, it's just really the first and therefore many are looking at it as a guide for all other cryptocurrencies. Also I'm not sure all that many governments are "endorsing" bitcoin, but more so allowing it to be used (meaning they didn't legalize it either, they are just allowing for it to be used).
if you look at it now, it's true that there won't be many countries that will legalize it like elsalvador, but we will never know how it will develop in the future, and all possibilities will happen. bitcoin itself is not a direct parent to other coins, but bitcoin influences the majority of other coins in every movement