If it's an existential war why would you want to limit a victim in any way?They've not been denied anything that could only be used defensively and wouldn't risk depleting NATO stocks. Everything that has been denied so far has been either offensive capable (long range missiles, jets) or would risk leaving the donor country short (tanks, jets).
Most western countries condemned the use of these weapons in Lybia, Syria, Sudan and Yemen, so if we keep telling ourselves that ukraine is in a way defending western values (democracy, joining EU, etc), I would just hope for a little consistency.