The Easter Egg culture for Merlin has become a lot.
Realistically, sticking in an Easter Egg takes very little effort. Taking Toxicator as an example, it wouldn't have taken any real energy and time away from the creative team to throw in references to 1997, seeing that "Ripsaw" spelt backwards was "Waspir", and that could be used to spell something that sounded vaguely acidic in "Waspirium", a poster with "Can you cut it?", etc. It's a fun little nod. Designers putting their name on an attraction is also a trend which has been around a long time too.
But there's now an innate expectation for Easter Eggs which has come from influencers and enthusiasts seeking them out and really pushing them. It erred too far. My favourite example of how far it went was how Survival Games at Thorpe Park features a prop of a severed penis (behind a fence, in a box, not in an obvious place, I believe), with a tag labelled "JS" on it, which stood for Jack Silkstone, an 'Easter Egg' to how Jack was involved in the marketing for it. Again, not something that takes up time, money or energy to create really, but extremely convoluted, and by bringing it to people's attention and encouraging them to look out for it, actively takes away from the experience.
And that's the issue now. People fixate more on Easter Eggs and finding these nods and feeling clever than actually taking in the bigger picture. Going back to Toxicator, whilst all the references make sense and that, does Toxicator really fit and work with Forbidden Valley? Well, it's certainly changed the area more and continued to turn of it into X Sector 2.0.