Arsenal lost both in the league and the Champions League.
I don't think this point loss and defeat is good for Arsenal because they could have found morale in this match.
Aston Villa won today, if they continue like this they can participate in European cups if they rise to the upper ranks.
With 3 remaining matches and Arsenal wouldn't be able to win it that possible their 2nd position will shift to Manchester City and Newcastle. This is a pretty embarrassing thing, because Arsenal is always steady play previously, they seem lost control and can not adapt well at the end of season. The opponent already know well how Arteta strategy, and they know very well how to overcome defender, and how to dispel Saka. I don't know what wrong with this, The strategy is look recurrent weakness. This is why arsenal never won a trophy because their strategy can easily be read, and Arteta couldn't improve it on every match.
Aside from the fact their strategy can be easily read, Bournemouth isn't a small team in the premier league stands today and they have proven that countless times as they even won Manchester city in this season and many other big clubs like Manchester united so arsenal losing the game isn't anything different although the fact that they were already leading still counts though.