I disagree. Many eighties classics are still very enjoyable today because they're so unlike modern games or even late nineties "golden age" RPGs, but when successors offer the same kind of experience but better, many pioneers end up losing their appeal. Look at Ultima VI for example, an innovative open world RPG lauded at the time as a masterpiece, that today is just that old kiddie RPG enjoyed only by nostalgic Gen-xers, since storyfags became more demanding after games like Fallout and PS:T, modern settings make Britannia look like a retarded theme park, mainstream sandboxes like Minecraft are exponentially more interactive, mouse driven GUIs have improved a lot since 1990, and so on. Ultima VI might have been a very unique and exciting game at the time, but today it feels like a mere prototype, and even older entries in the series seem more interesting and fun.Games don't age, you do. Whether a game holds up or not is based on whether you can get over the learning curve and enjoy a genre/style of game. Any game that held up then will hold up today.
There is just so much in gaming that has progressed since then. And although modern big budget RPGs are dumb, you can still get stuff like KOTC, Blackguards, Aarklash, etc. which all provide similar gameplay to the old classics but with all the modern essentials like decent controls, and higher than 800x600, etc.