Why is there so much Portuguese in Macau and so little English in Hong Kong?

You are indeed right. It is indeed the difference between Latin and Germanic peoples. Latinos are more enthusiastic and casual. Almost all Latin-speaking countries are like this: Spain, Portugal, France, Italy ... what they can think of is "enthusiasm" and "romance", but the Germans are not. So wherever Latin people go, they often leave behind their descendants. You see, many Latin American countries are mixed-race Spanish, Portuguese and local people (called mestizo in Spanish, mixed-race Indo-European). It is the same for them to go to Asia. For example, the Philippines was once a colony of Spain, and many Filipinos have Spanish descent. For example, Ye Fei, a famous Filipino overseas Chinese general in China, is of Spanish descent because of his mother (a native Spanish ancestor and his father's ancestral home in Fujian). In Indonesia, the former colony of Germanic people in Asia (once ruled by the Netherlands), the proportion of Indonesians with Dutch descent is much smaller than that of Filipinos with Spanish descent. The same is true of Macao.

I have lived in Latin America and have a personal understanding of their personalities.

Supplementary answer:

No, in the past, the French also had a sphere of influence in China, and it was the Spanish and Portuguese governments that killed the Latin American natives (Indians). Only the contradiction between most Latin American countries and China is not very deep. Many Latin American countries are also friendly to China, such as Venezuela, Chile, Peru and Cuba. Even if they are not very friendly, they have their difficulties. Latin America is the backyard of America, and America has great influence and pressure on them.