I read through the full paper and it's pretty interesting. A lot of it was not convincing in my opinion, but it mostly feels like a genuine attempt and not the work of crackpots.
Cons:
Low resolution pictures of rocks under different lighting conditions can be deceiving.
Some of the pictures just look like cool rock formations.
Some editing mistakes with dates and numbers.
Pros:
Some things are incredibly good evidence for life as long as they are real (looking at you Venus)
Makes a good case that things can be alien life, Earth life, and/or natural. Things shouldn't be ruled out.
(PDF) Fungi on Mars? Evidence of Growth and Behavior From Sequential Images
Cons:
Low resolution pictures of rocks under different lighting conditions can be deceiving.
Some of the pictures just look like cool rock formations.
Some editing mistakes with dates and numbers.
Pros:
Some things are incredibly good evidence for life as long as they are real (looking at you Venus)
Makes a good case that things can be alien life, Earth life, and/or natural. Things shouldn't be ruled out.
(PDF) Fungi on Mars? Evidence of Growth and Behavior From Sequential Images