Can you create hostile, dangerous conditions that undermine operational units by replacing AD with Reservists in billets?

Take the example of a Navy Guided Missile Frigate Combat ship normally manned with 200-220 full time approximately. Now short that crews full time by 30-40 and fill those billets with a reserve enlisted. What if one of those reserve enlisted is just 18 and never served full time yet? So his e1 e2 e3 e4 experience part time assigned is going to be so different there is no Training manual that ever considered such experience. Would not dangerous working conditions exist mixing e1 e2 e3s with in the same operational unit with vastly different amounts of experience individually and as a team? What about psychology of adaption acceptance experience creating safe strong team bonds for operational duty? The rest of the crew has to figure out how to make this work. The other full time e1 e2 e3 e4 have to cover. The part time reservist just has to figure out how to survive both not being understood, still try to survive off the ship, survive on the ship and the 18 year old Reservist starting out his adult life will have a rubix cube to figure out, assignment to a ship permanently part time otherwise on call 24/7 full time ship manuals to qualify in regardless of duty status, will never have medical benefits for such thing as motion sickness, heat exhaustion, joint problems, stress, and the pay is far below poverty limits to pay for rent and food etc etc off ship...