The answer is no, but I suspect you know that yourself.
You could have a point if the different in coefficients was huge, which it isn't. Just a few years ago, England were third behind Spain and Italy and I didn't hear anyone suggesting Spain and Italy should have more teams in the CL.
Just be glad that English teams are doing well right now and don't make such arrogant threads. Spain dominated the European team for most of the 00s, and with a much bigger difference than England do now (the difference is minimal in terms of coefficient) and you didn't hear anyone suggesting Spain should take more teams.
Also, your post is very inaccurate.
I just think the EPL's 5th and 6th placed teams can easily perform just as well but probably better than whoever gets 3rd and 4th for La Liga and yet they have to go to the Europa League.
This is complete rubbish, it's basically your way of saying that you love the Premier League, therefore more PL teams should be in the CL. If these 5th and 6th place teams in the PL are so strong, why haven't they ever won the Europa League? Last season, City and Liverpool didn't even come close. If these sides were dominating the Europa League, you could have an argument that they deserved to be in a better competition, but as it stands you have no argument.
they are always the ones performing well in the CL so they give La Liga an unnatural ratings boost.
I could have killed your entire argument if I had started here, but I felt like rambling a bit. This point is absolutely ridiculous. In the past five years (the ones that count for the current rankings), Barcelona and Real Madrid together have got less points than Manchester United and Chelsea (250.014 vs 239.515). The points of non-big 2 sides are pretty much the same for both countries, it's difference between Chelsea and Madrid's points (Madrid had never gone past the first knockout round before last season) that makes most of the difference in the ranking.
If anyone has been given an unnatural boost, it's England with United and Chelsea's points.
Your thread has no leg to stand on.