For Chelsea's target of finishing in the top 4 or 5, I don't think it will ever happen, they don't deserve it, they still have a lot to fix and it's possible that won't be possible this season.
I agree with what you said. They don't deserve it. Chelsea's performance has been really bad this season. I don't know which fan said Chelsea could possibly reach the top 4 or 5 at the end of the season. I think at the moment Tottenham, Aston Villa and West Ham are much better than Chelsea so it's completely unreasonable to say Chelsea will be able to get a place in the top 4 or five at the end of the season. They have to correct their mistakes in this season because I don't think they will get any place in the international league in the next season.
There are still 16 matches left this season, we don't know what will happen at the end of the season and all clubs in the Premier League still have the opportunity to be in the top 5 positions in the points table as long as they have high consistency.
Chelsea this season seems to have no hope anymore, even since last season Chelsea fail to get a top 5 position to get a ticket to the Champions League or UEL.
I wouldn't be surprised if Chelsea fans still have confidence that their favorite club can still achieve what they hope for even though in terms of performance Chelsea doesn't have the ability to increase the number of points consistently but always performs poorly and doesn't live up to expectations.
In fact, it's quite easy to see that Chelsea has improved or just wants to performed as usual, namely looking at the winnings result, if Chelsea is able to get 5 wins in a row, I'am sure this club is capable of reaching the top 5, but since the start of the season until today, Chelsea has not had such an achievement and we just look at the upcoming match against Wolves who are right below whether Chelsea is able to get a win or just a draw.
If I fail to get a win, I think Chelsea will definitely fail again.