Not the case in this article (nor, as far as I know, in most articles of this magazine). Written on the first line, second sentence:
"The BMC ADO17, most known as Austin 1800..."
Once again, French article in a French magazine, so French specific market. Remember the Renault 4 discussion

Other BMC makes were not usual for that car, in France. The Austin model itself is not that common, in fact. So for me, this is (more or less) the same as having (in France, once again ) a title like "Ford Taunus (1970 - 1982)", with the "Cortina" name and "TC" complement mentioned (several times) later in the article. In any case, it sounds logical to me in a magazine intended for both the general public and the specialists.

Moreover, and if I'm not mistaken, the author of the article about the ADO17 is the one who often shows amazing pictures about almost undocumented versions of British cars in his articles, and as a Belgian, gives also the French and Belgian specs of the cars when possible. I think we can say he knows what he's talking about...