I would agree with you maybe 10 years ago but I think that the empire being in such decline and leading us to the worst candidates back to back to back it’s really hard for me to believe that third parties are to blame for the spoiler effect. Taking third parties off the ballot most likely wouldn’t have the effect that people put on them because everyone has an opinion on the two candidates more than ever.
I mean, optical illusions have been used to fool audiences for years.
https://youtube.com/shorts/bsyRnmdceqQ?si=SfUM2mssqc1sjvNt
This is a motion picture of course but the idea is “faking” an image isn’t too far off.