overall i would agree.
when it comes to corporations private networks. they are beginning to use the term DLT (distributed ledger technology) so even corporations are in agreement to want to define their closed networks as something different to open networks(blockchains). but yes i still see some corporations closed networks still defining thier centralised networks as blockchains. but its good to see some corporations are making good definitions to separate themselves

blockchains and cryptocurrencies are different. because a blockchain is the format of the data and how it is distributing the database/ledger
cryptocurrency is the data inside the database/ledger being financial.
for instance a blockchain could be used idendity/medical records. so although it uses blockchain/DL technology the data is not a currency, so the data and the database/ledger have nothing to do with currency, thus should not be defined as cryptocurrency

also people are now starting to move to the bitcoin token units of 'bits' (100 sat) which will reduce the confusion between bitcoin protocol and bitcoin token unit of currency

but in a world of billions of people there will always be misundertandings of these words.
even now after hundreds of years when people hear the word "dollar" they still think there is only one dollar and that its related to america. they dont think about australia or canada or other countries unit of account of the same name. we just have to kep trying to educate people until the majority us the terms correctly