That image is clearly binary stars rotate about their very center and not understanding their own equipment which created a noise anomaly.

"The essential reason why the ring image was obtained by all the EHTC imaging analyses is the limited u−v coverage of the EHT array for M87, namely the data sampling bias; though the EHTC realized 230 GHz VLBI observations on a scale that has never been accomplished before. In addition, the very narrow FOV settings of the EHTC strongly help to create ∼40 μas ring shape from the EHT u−v data sampling bias"
https://arxiv.org/abs/2205.04623 Astronomy is based on faith today. it's sad but true