Past bias makes no sense. Everything evolves to a better and more sophisticated level as time goes by, but that doesn't mean those from the less sophisticated times should be disregarded now.
Art has evolved to be better over time, just like football. Modern artists will in some cases, with all their modern equipment, technology, resources, support and education, maybe create a work of art reminiscent of what only the very best in history could do. Something that if you were to show to Da Vinci 500 years ago he'd say "holy shit, I've never seen anything like it". But does that mean these modern artists are in a way superior to Da Vinci? No, absolutely not.
Da Vinci invented all the techniques and ideas they are working with in the first place. He did what they do now without any support of technology, with his bare hands and genius mind.
My point is, in football Pele is like Da Vinci. A lot of tricks and feints used by modern footballers were first invented by Pele. Pele, with the use of modern medicine and equipment, would have no problem adapting to modern football and performing at the level required for it (probably way above required too, because he was immensely talented and it's a fact obvious to everyone). Just like Da Vinci with modern technologies would create works of art that these modern artists can't even think of.
It's okay to argue modern football has better footballers than him. There are some who have a case for it. But Pele is there at the very top and will most likely remain forever. With all due respect to Lewandowski who is also a fantastic footballer, comparing him to Pele who is a whole dimension above in all aspects is too disrespectful to the game itself.