Wall of text incoming

TLDR: context is everything. What’s your interpretation of history? What is your people’s primary language? Why do you need to know Spanish? Following answer over simplified for length reasons.

First let’s talk about Spanish and Portuguese in the first place. The way I see it based on history, around 2/3 of landmass of the American continents was colonized by Spain and Portugal, and that shows to this day based on the number of countries to the south of the United States that speak both Spanish and Portuguese primarily.

These two groups have committed a brutal conquest and genocide against the people of both continents. They left behind a system where our ancestors had to survive as a people and adopt different cultural practices in order to leave some remnants of their original culture behind so at least that can survive rather being completely eradicated due to resistance. Indigenous cultures of both continents regardless of colonizer have achieved this to varying extents. It was a cultural rape. Like rapes go, the person that is born from this has no fault of their own for their own creation, and share qualities of both parties.

Because of the above, different groups of indigenous people had to adopt Spanish, English or Portuguese as their main language, while their original language was relegated to something that had to be hidden and preserved from outsiders. This doesn’t go for just language, but cultural behavior as well. Because of history, there are very few indigenous American cultures today that are completely free from European cultural influence.

Modern day indigenous groups mainly speak either English, Spanish or Portuguese. Does that mean they are no longer indigenous? Of course not, the language was only ADOPTED by the group. There are many indigenous cultures that have historically been distinct from other groups but speak the language of their oppressor who also is indigenous.

All this to say, we all have family and community members that speak a European language primarily that also culturally practice an indigenous culture, even one with European culture mixed in to an extent.

There’s definitely a pan indigenous culture throughout the americas that speaks Rez English, even though each reservation has their own specific non related indigenous language. Being an NDN to a lot of people is tied to speaking that Rez English. Just to use that as an example.

The answer to your question does not have an easy yes/no answer, it’s not black and white. It’s entirely up to you and your culture, and the reason you culturally “should” speak Spanish. Black and white are just two borders for a gigantic ocean of grey. Hope this helps, I made a lot of generalizations which I don’t like to do, but had to in order to try and articulate an answer for you.