Most soul sleep adherents find no issue in accepting that demonic/unclean spirits are conscious beings despite the fact that they lack physical bodies. The scriptural evidence for this is quite undeniable:
Matthew 12:43-45 (ESV):
43 “When the unclean spirit has gone out of a person, it passes through waterless places seeking rest, but finds none. 44 Then it says, ‘I will return to my house from which I came.’ And when it comes, it finds the house empty, swept, and put in order. 45 Then it goes and brings with it seven other spirits more evil than itself, and they enter and dwell there, and the last state of that person is worse than the first. So also will it be with this evil generation.”
Mark 5:1-13 (ESV):
They came to the other side of the sea, to the country of the Gerasenes. 2 And when Jesus had stepped out of the boat, immediately there met him out of the tombs a man with an unclean spirit. 3 He lived among the tombs. And no one could bind him anymore, not even with a chain, 4 for he had often been bound with shackles and chains, but he wrenched the chains apart, and he broke the shackles in pieces. No one had the strength to subdue him. 5 Night and day among the tombs and on the mountains he was always crying out and cutting himself with stones. 6 And when he saw Jesus from afar, he ran and fell down before him. 7 And crying out with a loud voice, he said, “What have you to do with me, Jesus, Son of the Most High God? I adjure you by God, do not torment me.” 8 For he was saying to him, “Come out of the man, you unclean spirit!” 9 And Jesus asked him, “What is your name?” He replied, “My name is Legion, for we are many.” 10 And he begged him earnestly not to send them out of the country. 11 Now a great herd of pigs was feeding there on the hillside, 12 and they begged him, saying, “Send us to the pigs; let us enter them.” 13 So he gave them permission. And the unclean spirits came out and entered the pigs; and the herd, numbering about two thousand, rushed down the steep bank into the sea and drowned in the sea.
Luke 24:36-39 (ESV):
36 As they were talking about these things, Jesus himself stood among them, and said to them, “Peace to you!” 37 But they were startled and frightened and thought they saw a spirit. 38 And he said to them, “Why are you troubled, and why do doubts arise in your hearts? 39 See my hands and my feet, that it is I myself. Touch me, and see. For a spirit does not have flesh and bones as you see that I have.”
But, if unclean spirits can be conscious without physical bodies, why can't human spirits also be conscious without physical bodies? Are unclean spirits and human spirits fundamentally different? Aren't they all just spirits? If God is spirit, does not have a body and is conscious, if unclean spirits do not have bodies and are conscious, why can't human spirits also be conscious in the absence of a physical body?
I'm interested in what soul sleep adherents have to say about these questions.