NASA Announced Possible Ancient Life on Mars?

Have you heard?! NASA recently announced that the Perserverence rover may have discovered signatures of ancient life on Mars. This may look like just small spots on a rock, but NASA suggested this may be a fossilized signature of ancient microbial life in Jezero Crater.

What makes this announcement much more significant that previous statements in the past is that NASA is having a harder time trying to prove the spots are not potential signs of ancient life. What do you think?