Yes, we may be thin regarding ballhandlers. We don't know how long will Isaiah be out, we don't want to rush him once he is recovered, we lost Avery who could be an insurance PG and now we are waiving Jackson.
We are one injury away (Rozier or Smart) from beginning the season with a ballhandler in the entire roster. And no, Hayward or Jaylen aren't ballhandlers; they are wings. The fact they have dribbling or handling abilities doesn't turn them into de-facto PGs.