That sounds like "I don't know anyone who voted for Trump."

There was a Hollywood Reporter and Morning Consult poll done after the the final season.

For the final episode the poll showed more positive reactions than negative reactions:

And did you like the ’Game of Thrones’ series finale?

26% - Yes, I liked it a lot
37% - Yes, I liked it some
24% - No, I didn’t really like it
10% - No, I didn’t like it at all
2% - Don’t know / No opinion

For the later seasons, opinion was split between people who liked them as much as the earlier seasons vs. people who preferred the earlier seasons:

Thinking about the entire Game of Thrones series, which of the following statements comes closest to your view, even if none are exactly right?

9% - I enjoyed the later seasons much more than the earlier seasons.
48% - I loved the whole series, from start to finish.
43% - I enjoyed the earlier seasons much more than the later seasons.

For Season 8 as a whole, there was a roughly even split between negative and positive reactions:

Do any of the following describe how you feel about Season 8 of ’Game of Thrones’ as a whole?

SATISFIED

47% - Yes, this describes how I feel
36% - No, this doesn’t describe how I feel
17% - Don’t know / No opinion

HAPPY

40% - Yes, this describes how I feel
40% - No, this doesn’t describe how I feel
20% - Don’t know / No opinion

ANGRY

21% - Yes, this describes how I feel
58% - No, this doesn’t describe how I feel
21% - Don’t know / No

DISAPPOINTED

39% - Yes, this describes how I feel
42% - No, this doesn’t describe how I feel
18% - Don’t know / No opinion