@f_loki this is a good resource: http://jeanpaulvanbendegem.be/home/papers/strict-finitism/
With plenty of commentary on the important papers. Van Bendegem's paper "A defense of strict finitism" is a good summary.
(Full disclosure: my supervisor is writing a critique of Van Bendegem's position. Last year VB was at my institute and gave a talk on this...)