https://newint.org/features/2021/08/09/interview-luiz-inacio...
He's a very contested figure in Brazil. On the one hand, he earned popularity for creating social welfare programs such as Bolsa Família [2]. On the other, he's been involved in various corruption scandals, including the Mensalão vote-buying scandal [3] and the Petrobras scandal [4], one of the biggest the world has seen.
[1] https://www.em.com.br/app/noticia/politica/2022/02/21/intern...
[2] https://en.wikipedia.org/wiki/Bolsa_Fam%C3%ADlia
Mensalão happened, and the Petrobras scandal, both involves much more than just Lula, it's how politics in Brazil work. Car Wash involved virtually every single party in Brazil, Mensalão involved every single one of the "center" parties (we should just call them "opportunistic parties") in Brazil.
At the same time, Lula's government lifted tens of millions of people out of poverty, kickstarted numerous infrastructure projects for the poorest areas of Brazil and so on.
Everything is a double-edged sword in Brazilian politics, given the prospects for the next 5-10 years I don't see any other politician than Lula that has enough political clout to beat Bolsonaro while implementing social policies such as Lula's previous governments.
He's from the same corrupt political lineage as the Kirchner family in Argentina, do you really want to fund the people that only mange to bring misery to these countries?
The interview you link is just our everyday populist discourse: show yourself aligned to whatever is the hop topic of the moment, get elected, do nothing about it and continue to use the power to finance your own corrupt agenda. Didn't work? No worries, you can always use the "heavy heritage" from Bolsonaro as an excuse.
He is known in Brazil as Lula. Only Brazilians can legally donate to political campaigns, so you might as well refer to the candidate as he is known among the possible donors.